Hello, thanks for reaching out.
I understand you need help finding your BitLocker recovery key. The easiest way is to check your Microsoft account at account.microsoft.com/devices/recoverykey. Sign in using the same account linked to your PC, and you should see the 48-digit key listed there.
If your PC is managed by work or school, sign in at myaccount.microsoft.com or contact your IT support. You can also check a USB drive, printed copy, or file where you may have saved it. If you can’t find the key, the only option is to reset your PC to unlock it.
Regards,
Arlene D.