How do I access my Recovery key to unlock the volume “Macintosh HD”
How do I access my Recovery key to unlock the volume “Macintosh HD”
How do I access my Recovery key to unlock the volume “Macintosh HD”
Refer to Reset using your Recovery Key (FileVault must be on) in Change or reset the password of a macOS user account - Apple Support.
It is possible an Institutional Recovery Key was configured for that Mac.
In any event there is no way of discovering a Recovery Key that you do not know.
How do I access my Recovery key to unlock the volume “Macintosh HD”