I fell back I mn 2006 and injured my right hip had MRI dr. Said my hip was injered now dr. Says I need hip replacement as its worn out. Is this outcom?

Worn out hip. If your hip joint is indeed worn out, hip replacement is an option. I cannot say it's the only one as I am not aware of the entire story.
Probably. Since do not have access to your medical records and imaging studies cannot possibly comment on your condition, but the suggestion the doctor gave you sounds very reasonable.