Stone chips = touch up paint or respray
Water spots = remove them...various ways
Plastic scratches = clean and treat with Viinylex. Minor ones tend to blend away. If its a bad scratch, live with it or replace the trim
Scatched Chrome Trim = chrome polish and then a coat of wax to try and hide the scratch. Not very successful, but no other options.
Damaged vinyl = get an interior trim guy to touch up