Re: Account recovery:
You may be able to recover your Apple ID account by proving your identify to Apple, and waiting.
(ie: If you use two-factor authentication and can’t sign in or reset your password, you can regain access after an account recovery waiting period.)
In some cases, you might be able to speed up the account recovery process or reset your password immediately by verifying a six-digit code sent to your primary email address. You might also be able to shorten the wait time by providing credit-card details to confirm your identity. If you’re given this option, an authorisation request goes to the card issuer.
Starting point: https://iforgot.apple.com/password/verify/appleid
More info: How to use account recovery when you can’t reset your Apple ID password - Apple Support