How Do I Locate My Key recovery

Apple has a support page about the recovery key.

Eg: says:

"When you generate a recovery key, print a copy or write it down. Keep it in a safe place, so that you always have access to your Apple ID. You can give a copy of your recovery key to a family member, or keep copies in more than one place".

If you forgot your recovery key, you can edit it with a new one.

See: Set up a recovery key for your Apple ID - Apple Support