I feel my shoulder bone is being somewhat higher. whatshould i do?

May be dislocated: Go see an orthopedic surgeon to be evaluated. It may also be normal.

Get checked.: If this is something new or recent, then you better see a doctor to check you out. And least get a chest x/ray.

How is your back: Is this new or have you had this problem? It could be scoliosis from your youth. If you have pain or notice any deformity make sure to consult your doctor.

Observe: If you will observe you body closely, you will find that we are not very symmetric. Your shoulder level could depend on your posture, the status of your spinal column, your work( what you do with your hands), and many other thing. Visit your doctor determine if there is anything to worry.