I have a 2013 Honda accord coupe, I rubbed by a large truck with large tires, the rear fender has a dent mid way on the rear driver side quarter panel where the wheel fender is below the gas tank. how much work would be necessary to fix it and how much would it cost me roughly

 

Impossible to even give a rough estimate without photos, and price will vary vastly depending on what body shop you take it to.

 

Price will vary by location and body shop.
I'd guess low end price roughly $600. Higher end price $3k.