Important: Windows 10/11, by default hides the “AppData” folder, so you will have to go to “View” in the menu of File Explorer, and select “Hidden items” to see it. Please see this Flight Simulator Knowledge base article for more information.
Flight Simulator 2020 Community Folder Locations
Microsoft Store Version
C:\Users\YourUsername\AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalCache\Packages\Community
Steam Version
C:\Users\YourUsername\AppData\Roaming\Microsoft Flight Simulator\Packages\Community