Help! I scratched my car how do i get rid of scratches?

I was driving into parking garage and drove to close to a pole. I heard a noise stopped my car turned around turns out I was driving against a pole. . The the paint is off my car and it looks Awful. There are white skid marks where the pole hit my car on the penger side of the door my car is blue. it looks bad.How can i get this fixed? Do i get it repainted? or Do i take it the car wash? How much is it going to cost me? I have a 4 door sedan 2010. nissan versa