Hello MOHIT MEENA,
thank you for posting on the Microsoft Community Forums.
When you set up BitLocker, you were prompted to save a recovery key. This key can be saved to your Microsoft account, a USB drive, a file, or printed out. Look for this key in your Microsoft account or the location where you saved it. For the details, please see Find your BitLocker recovery key - Microsoft Support. Unfortunately, without the password or recovery key, you won’t be able to access the encrypted drive. BitLocker encryption is designed to be very secure, and bypassing these protections without the proper credentials is not feasible.
**Important:**Microsoft Support is unable to provide, or recreate, a lost BitLocker recovery key.
Best regards,
Lei