A protectant or even something like BLACKFIRE Crystal Seal can help fill in the fine scratches and temporally hide them. Unfortunately, you cannot really polish vinyl to remove the marks, particularly if they are a matte/dull finish.
If they are high gloss stripes you can try to use an ultra-fine polish on a finishing pad, but test an inconspicuous spot first!!! I have seen good results and damage, depending on the vinyl.