If you enabled FileVault and chose to create a Recovery Key instead of using your Apple ID, you must find that 24-character code. Without this key or your password, the data on an encrypted Mac is inaccessible. How to Avoid This in the Future
Click the question mark icon or the message that says, "If you forgot your password, you can reset it using your Apple ID." link crackmymac password
If using FileVault, keep a physical copy of your recovery key in a safe or a digital copy in a secure password manager like 1Password or Bitwarden. If you enabled FileVault and chose to create