forgot passcode to MacBook Air. how do I recover it?

Welcome to the Apple Support Communities.

Please see: If you forgot your Mac login password - Apple Support.

If you have tried those steps and you cannot reset your password, see: If you can't reset your Mac login password - Apple Support.

Jack

Hi Papagonza,

Can you please provide more details about the situation? Which parts of the linked articles didn't work? The more details you provide, the easier it is to help you.