Hello Sofia, how are you?
Press Winodws+R, type cmd and click Ok, then type the command below and press Enter:
manage-bde -status
After that, share an image of this screen, please.
Also check if it is possible to remove BitLocker this way.
- Press Windows+Q and type:
Manage Bitlocker
- After that, check the disk that had the encryption and click on Disable BitLocker;
- Wait for it to finish.