FS2020 SDK "C:\MSFS SDK" 64 bit assembly post build event which copies the DLL and config:
xcopy "C:\MSFS SDK\SimConnect SDK\lib\SimConnect.dll" "$(TargetDir)" /y
xcopy "C:\MSFS SDK\Samples\SimvarWatcher\SimConnect.cfg" "$(TargetDir)" /y
required Microsoft.FlightSimulator.SimConnect.dll