Scillia is metallic so you will never hide the scratch if basecoat to primer breached
It all depends how wide what height etc the scratch is to whether you can lose some/all of it with an application of a pen
It might be best to get advice of an independent body shop as to whether a touch up would be worthwhile because sometimes you can make it worse.
Ive had success with liquid lacquer from autosmart on scratches that cut the lacquer but not the basecoat but again your paint man could advise better.
Remember i said independent not some faceless insurer dependent bodyshop.