Do you have a SiriusXM subscription?
If not...hit the OPTION button next to the iDrive Controller knob when you have the screen up that you posted. This should give you additional info which should include your SiriusXM radio ID number.
If you don't have a SiriusXM radio account...you can take that radio ID# and go to
https://www.siriusxm.com/ and purchase a subscription. There are usually reduced rate subscriptions being offered for new or currently unsubscribed owners.
Good luck.