I'm with f-150. If somebody thought they could just spray a clear sealer coat of some kind over fiberglass, they were sadly mistaken. It is going to need to be sanded down, primed and re-painted. You can get a nice full body paint job for around $10,000. Probably somewhat less if you keep the paint scheme simple, e.g. a solid color above the bay doors and a stripe or two.
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL