Took my car out of storage and now it has a hard pull to the right when the brakes are applied. Should I try and bleed the brakes or should I replace the caliper or could it be somthing else. Thanks in advance for all advice.

open up the drivers side & see what you see & if it visually looks OK jack the front wheels off the ground & have someone in the drivers seat playing w the brake pedal as you see whats not activating on the drivers side.

Make sure it is not just rust. It would not hurt to bleed the brakes after sitting so long though.

Probably the rubber brake line hose to banjo on the caliper. If that is older and you can't tell if is has broken down, the hose will expand and distort making the caliper "hang" while the brake fluid flow has to decompress through a distorted hose. Change both, bleed the system and brakes are as good as new.

Other option would be to remove the bolt on the caliper holding the rattle plate and rotate the caliper off the rotor. Take some sand paper and really clean the pad sliding groove. Brake clean off the crap and apply some Anti Seize. That will make your brakes better anyway.