Hard to tell without seeing the scratch, but yes it can be done fairly easy.
Use a 800grit sandpaper and feather out a bit of the paint around the scratch. Using a wooden pic or a sharpened popsicle stick apply touch up paint to the scratch, let dry and apply until paint is abit raised from the rest of the good paint. Use a 1500 grit and wet sand down until the touch up pant is levelled with the rest. Polish area until gloss is uniform.