Lower back pain, rt arm-very painful. From shoulder to finger. Burning neck pain. X-ray says C6 and C7 bone on bone. Next is MRI then what?

Depending on the MRI. Findings and their correlation tot he symptoms/signs, and if no response to non operative treatments, your surgeon might advise surgery. He'll discuss the procedure with you. If nerves are pinched or the cord, then surgery would be the correct option for you. Good luck.
Exercise ; injection. Conservative treatment includes pt, steroid injections and antiinflamatories.