How do I connect Bose headphones to my Mac Air laptop?
How do I pair Bose headphones to 13" Mac Air laptop with M2 chip?
You didn't provide a ton of details in your question...things like which model Bose headphones...are the headphones wired or Bluetooth?...what MacOS are you running.
If the headphones are Bluetooth, they have to be in pairing mode before your MacBook Air will see them. Consult your Bose headphones manual to see how to accomplish this.
Hope this helps.