There are scammers and windows updates that can make you unlock your drives with a BitLocker key. It’s happening a lot. If you don’t have this picture by your storage device then you do not need to worry about it.
Although a scammer can lock it and if that’s the case they have their own key
If you do not feel comfortable doing this yourself my cost is $50
You can do it yourself by going to this location on your computer and clicking on the links provided for each storage device you have on your computer where the unlocked lock shows up:
Control Panel\System and Security\Device Encryption
If you see a lock on your drive but it’s open, you need to save the key to Microsoft and to a flashdrive. You also have the option to print it out.
You should consider backup too!