Hi there,
If your device is a modern device that meets certain requirements to automatically enable device encryption, your BitLocker recovery key is automatically saved to your Microsoft account before protection is activated.
You can try to recover them by following these articles.
Finding your BitLocker recovery key in Windows
https://support.microsoft.com/en-us/windows/finding-your-bitlocker-recovery-key-in-windows-6b71ad27-0b89-ea08-f143-056f5ab347d6
BitLocker recovery guide
https://learn.microsoft.com/en-us/windows/security/information-protection/bitlocker/bitlocker-recovery-guide-plan
You can also try to disable the secure boot in the UEFI and try logging to your device.
-Open the PC BIOS menu:
You can often access this menu by pressing a key while your PC is booting, such as F1, F2, F12, or Esc.
Or
From Windows, hold the Shift key while selecting Restart. Go to Troubleshoot > Advanced Options: UEFI Firmware Settings.
-Find the Secure Boot setting in your BIOS menu. If possible, set it to Disabled. This option is usually in either the Security tab, the Boot tab, or the Authentication tab.
-Save changes and exit.
Hope this resolves your Query!!
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