Sadly, AirPods' hand a 0/10 repairibility score for a reason: they can NOT be opened up without breaking them. Looks like your gonna have to get a new pair bud.
Replace the battery. IF it still does not work, makesure you don't have any other quest 2 headsets that is could pair with. Also, checkif your Quest isshowing the controllers as conected
If it's a PS4 game, try using a DualShock4 (DS4). Otherwise, try using a diffrent controler, same game with diffrent PS5, original PS5 withdiffrent game, etc.