Stiff neck that clicks when i move it, pins and needles from neck down right arm. r shoulder pain. what should i do? numbness in arm- dead arm?

Cervical spine: It suggests something wrong either in the cervical spine or the brachial plexus (the complex of nerves leading into your arm). You will need examination by a neurologist or hand surgeon and probably require imaging studies after a full exam. Go soon. The earlier neuropathy is corrected, the better the outcome. Good luck.

"pinched nerve": Sounds like you have a "pinched nerve" in your cervical vertebrae. See your family physician who may see fit to send you to an osteopathiic physician or a physiotherapist and maybe order an x-ray of your cervical spine.