Is it down to metal? Looks like the primer. They sell paint touch up pens like this for your specific model that you can probably get at the local dealership. The top part is an abrasive tip to scrape away any of the loose paint or primer and to smooth the edges. Then take off the cap and fill the scratch with paint, dry (maybe fill/dry a few more times), wax, buff. Some of the pens also have primer.

Edit: clear coat, not primer.