Rotor cuff surgery I had my left should done last year, what I would like to know is it normal to be a 3inch scar that is on a bad angle, and sunk in, really bad at the top of scar.

Scar revision. That is not typical, but everyone heals differently. You should see a plastic surgeon for possible scar revision.
Scars . Scars are inevitable following shoulder surgery. Yes, it is normal to have a 3 inch scar following a rotator cuff surgery, many patients have this result. There are creams that can be rubbed on the scar to reduce the unsightly appearance. Talk to your health care provider about prescribing something to help.