Polish Nintendo Switch?

Since the back of my Nintendo Switch is pretty scratched, I wanted to know if you would recommend a polish or not? So there are no noticeable scratches, but there are many visible scratches. I would like to be able to sell them. Look forward to advice

I would not polish, I would put in a new back. It's faster and easier. Enter "Nintendo switch Back Cover" on eBay. Sometimes you can even find originals.