recover apple ID password
How long is the waiting period to recover a password?
Mac mini 2018 or later
It depends.
See:
How to use account recovery when you can’t reset your Apple ID password - Apple Support
Check the status of your request
At any time, you can see how long it will be until your account is ready for recovery, or when more information will be available. Just go to iforgot.apple.com and enter your Apple ID.