Hi, @Kisha
Even Microsoft Support does not have access to your Microsoft account and cannot change the recovery email, bypass the account verification, or retrieve/recreate a lost BitLocker recovery key. Microsoft confirms this here: https://support.microsoft.com/windows/security/encryption/find-your-bitlocker-recovery-key
If you cannot pass the Microsoft account recovery process, please check whether you have another backup of the BitLocker recovery key.
- Did you ever print the 48-digit BitLocker recovery key or save it to a USB drive or text file?
- Could the key have been saved under another Microsoft account that was previously used on this PC?
- Was this PC ever connected to a work or school account? If so, the key may have been stored with that organization.
Microsoft lists those as possible locations for a BitLocker recovery key.
Thanks!