Caster is the degrees angle to represent how far the top pivot point is behind the lower pivot point. Generally the more caster you have the more the vehicle will want to self straighten the wheels. A little extra on the right will help compensate for the crown of the road. Also more caster may transmit more road harshness into the vehicle. Bad caster may not cause any tire wear issue.
If the vehicle does not drift to one side the numbers look fine to me.
Generally camber and toe will be the adjustments needed to correct bad tire wear. Camber will also tend to push the steering toward the side it is leaning.
The tie rods only adjust the toe. Not all angles are adjustable on all suspensions. Some may need special equipment to bend parts. You may need to replace bent or worn parts. Or a body shop would need to square the frame if bent.
Can you post a picture of the worn tire? Or at least describe the issue.