Hit a curb on front passenger side now wheel grinds and doesn't want to spin.what should I look for

 

Sounds like you hit it pretty hard if that has caused that problem. It can be any list of damage depending how hard:
- Control arm
- Ball joint
- Tie rod
- Strut
- Wheel hub

Best to jack the car up and inspect for bent parts and obstructions.

 

I'll add one more - the wheel itself. There isnt much clearance between caliper and wheel spoke on some wheel setups, so it wouldn't take a whole lot of bend to create contact.

Edit - adding another, the CV axle. Much less likely than some of the others mentioned (as the impact load should've been carried by the suspension as the CV can slip in and out), but crazier things have happened.