I don't think you will be able to completely remove it, but you should be able to make it a lot less noticable with the pc. What polishing compounds do you have?
Run your thumbnail across the scratch if it barely catches you may have luck having it color sanded and polished, if it is really deep color sanding will not work.
If your fingernail doesn't catch it , it can be wetsanded or polished out. If it does catch you might still be able to get most of it out ( educated decision) or make it look better. What color is it exactly, do you have touch up paint ? You could ask Chippy or any other stone chip repair business for a quote.