Yes, you need to set the permission to open the app.
Usually the chmod +x method in the install instructions works for most people.
That is:
Open up terminal and type sudo chmode +x (fpvfreerider.app) and that should do it.
It should look something like:
chmod +x /Applications/FPVFreerider_Recharged/Contents/MacOS/FPVFreerider_Recharged
(adding sudo at the start if needed).
Make sure you enter the correct folder path and app name (where the app is located on your computer).
After that you might need to go to your Mac menu System Preferences>Security & Privacy
If it says something like "Freerider was blocked from use because it is not from an identified developer" you need to select "Open Anyway".