These sceneries are free.
Although you do not need the basic airport scenery, it is much better than default :-)
But the Scenery of the Aerobatic Box is important for the competition. There are Box-marks.

X-Plane 11

Basic scenery of the Airport
Download from X-Plane Scenery Gateway. Read instruction there.
Scenery of the Aerobatic Box
Download from VWAC sites: EPLS - VWAC scenery for X-Plane (zip 218 kiB).

X-Plane 10

Scenery of the Aerobatic Box
Download from VWAC sites: EPLS - VWAC scenery for X-Plane (zip 218 kiB).

Microsoft Flight simulator "2020"

Scenery of the Aerobatic Box
Download from Flightsim.to (zip 149 KiB). Author: Michael Garbers.

Flight simulator X and P3D

Scenery of the Aerobatic Box
Download from VWAC sites: EPLS - VWAC scenery for P3D and FSX (zip 11 kiB).

Aerofly FS2

Basic scenery of the Airport and the Scenery of the Aerobatic Box
Download from Flight-Sim.org (zip 2,76 GiB). Author: Michael Garbers.

Main axis HDG: 259° Mag (264° True).

Basic scenery of the Airport:
These are free sceneries. Although you do not need them, it is much better than default :-)
For X-Plane Download from Forums.x-plane.org. Read instruction there - some libraries are needed.
For FSX and P3D Download from FlightSim - Periskop It is a big archive of 73 Czech airports. We need the LKBA for VWAC. So you can instal the LKBA airport and common files only.
For MSFS (FS2020) Not found any addon scenery.
For Aerofly FS2 Basic scenery of the Airport and the Scenery of the Aerobatic Box:
Download from LKBA - VWAC scenery for Aerofly FS2 (zip 5,2 GiB). Author: Michael Garbers. The link goes to Michael's web.

Scenery of the Aerobatics Box:
It is important for the competition. There are Box-marks (and some other things).

LKBA - VWAC scenery for X-Plane (zip 11 MiB). Author: Michael Garbers.
LKBA - VWAC scenery for P3D and FSX (zip 933 MiB). Author: Michael Garbers.
LKBA - VWAC scenery for MSFS (zip 139 KiB). Author: Michael Garbers.
For Aerofly FS2 - the same scenery as "Basic scenery":
LKBA - VWAC scenery for Aerofly FS2 (zip 5,2 GiB). Author: Michael Garbers. The link goes to Michael's web.

Main axis HDG: 259° Mag (264° True).

Basic scenery of the Airport:
These are free sceneries. Although you do not need them, it is much better than default :-)
For X-Plane download from FlightSim - Periskop As a bonus, there is a beautiful Castle Hluboka near the airport. Download from FlightSim - Periskop
For FSX and P3D download from FlightSim - Periskop It is a big archive of 73 Czech airports. We need the LKHS for VWAC. So you can instal the LKHS airport and common files only.
For FS2004 download from FlightSim - Periskop
For Aerofly FS2 there are Ortho-photo files (author: Michael Garbers):
Region Ceske Budejovice from Flight-Sim.org
Region Ceske Budejovice LOD 14 from Flight-Sim.org

Scenery of the Aerobatics Box:
These sceneries (except X-Plane) are as another airport "Hosín VWAC" - AC20. (See above).

LKHS - VWAC scenery for FS2004 (zip 5,52 MiB)
LKHS - VWAC scenery for P3D and FSX (zip 5,65 MiB)
LKHS - VWAC scenery for X-Plane (zip 10,1 MiB).
LKHS - VWAC scenery for Aerofly FS2 (zip 12,6 MiB). This must overwrite the hosin file so the tower is placed as a judging position. Installation for the linked file can be here: Aerofly FS 2 Flight Simulator Addons\scenery\czechrepublic\places.

Main axis HDG: 235° Mag (237° True). The "Tower View" point is placed on the Judge position and 1,5 m above ground.

Basic scenery of the Airport:
These are free sceneries. Although you do not need them, it is much better than default :-)
For FS2004, FSX and P3D download from F-BMPL.COM
For X-Plane download from XPFR Association It is for 8.64 but works in 10 and 11.

Scenery of the Aerobatics Box:
These sceneries (except X-Plane) are as another airport "Deols VWAC" - AC18. (See above).

LFLX - FS9 (zip 81,5 KiB)
LFLX - P3D, FSX (zip 93,8 KiB)
LFLX - X-Plane (zip 218 KiB).
LFLX - Aerofly FS2 (zip 10,3 KiB) Created using "Aerobatic Box Placer" Software (SW Author: Michael Garbers). Available at FlightSim.Com.

Main axis HDG: 123° Mag (123° True). The "Tower View" point is placed on the Judges' position and 1,5 m above ground.

FAMN - FS9 (zip 14,4 MiB)

FAMN - P3D, FSX (zip 14,5 MiB)

FAMN - X-Plane (zip 25,6 MiB). You need a library: Open Scenery X

FAMN - Aerofly FS2 (zip 31,2 MiB) Author: Stefan Schönberger

Main axis HDG: 277° Mag (259° True). The "Tower View" point is placed on the Judges' position and 2 m above ground.

LHMP - FS9 (zip 37,5 KiB)

LHMP - P3D, FSX (zip 39,8 MiB)

LHMP - X-Plane (zip 18,1 KiB)

Main axis HDG: 131° Mag (137° True).