Had two scopes with no relief. Just gets worse as day goes on knee swells up. One md wants to do replacement and other prp. Want relief before 9/19?

Try prp first. prp helps many people with knee problems. It may help you.
Possible. Hard to know from your description - bit sounds as if you had a menus cal tear and underlying arthritis. Can get short term relief with cortisone injections, but they do not alter course of arthritis, !which will get worse with time (but not necessarily quickly).Gel shots (hyaluronates) are sometimes used- very unpredictable as to effwctiveness.
See a rheumatologist. Have a rheumatologist evaluate the problem. Obviously surgery has not helped. Get an opinion from a non surgical perspective.