My lower back is completely out and i can barely stand. this is recurring but it has been about 3-4 years. there pain is sharp send can make me scream. would amuscle relaxer help?

I don't think muscle relaxers will do you any good. What you are describing sounds like a spinal cord problem. Please see an Orthopedic surgeon or a spine specialist ASAP.

Your chronic low back pain needs an aggressive approach, and whether this is physical therapy, an injection, or surgery depends upon the extent of structural pathology and the pain generator. A muscle relaxant is generally a major waste of time and money. See a physiatrist, and perhaps other specialists thereafter. Hope this can get under control.