Hi Collis,
What if I can't find the recovery key?
If your device is managed by an organization, check with your IT department to retrieve the recovery key.
If you can’t find the BitLocker recovery key and are unable to undo any changes that caused it to be needed, you’ll have to reset your device using one of the Windows recovery options.
Resetting your device will remove all of your files.
More info: Creating and using a USB recovery drive for Surface
Hope this helps,
Greg