i have a 1994 rodeo
and about a month ago
i hit a rock with it on the road
and blew the tire

but the last month, i knew i needed an alignment
and 2 days ago
i was driving home from work
and every time i hit the brake

it heard a loud thud, and metal grinding against metal

when i got home
i took the wheel off
and the inside of the wheel and the brake calliper were rubbing against each other

has any one had this problem
or know how to fix it
or how much it will cost to take it into a shop...

You probably bent the wheel. Have someone look at it while you drive the car. It will be obvious if its bent.