My father in law did my pads on the driver front the piston gave him trouble it actually came out he was able to put it right back in very easily now my rear breaks are fine its pulling slightly to the right the peddal soft going to floor try to bleed my screw wont open I need some advice

 

There's no work around you have to bleed all the air from the brake system, probably all four calipers. Spray the stuck bleeder screw with WD40 or equivalent rust buster type of chemical spray. Use a box end wrench not the open end side for maximum contact. Better yet use a six point box end or six point deep socket. If for some reason the bleeder screw strips or breaks the replace the caliper.