I recall someone asking about scratched plexiglass on their instrument panel. Mine was scratched badly from the dealer, like someone had wiped it many times with a dry cloth. I pulled off the bezel and used Novus #2 light scratch polish on it. It removed all the scratches and polished the plexiglass like new.There is also Novus #3 for deep scratches and Novus #1 for just polishing. FYI
You can find it on the internet, some auto parts stores, or, I found it at a motorcycle shop. Its used for taking scratches out of motorcycle windshields.