All this is assuming you can still boot into Windows 11/10 in a regular way. If you cannot, the only way is to use a bootable USB drive. You can then use the advanced recovery. Reset Windows Format ...

Click on Start, search cmd, and click on Run as Administrator. This will open an elevated Command Prompt, here; run this command: manage-bde -protectors -get C: All the Bitlocker recovery keys stored ...