As donn0128 mentions you ARE dealing with INDOOR FLOOR WAX..
Nothing more really needs to be said but folks have insisted on using it, with spotty results. Some folks seem to think it works fine and others have regretted using it after it starts to peel or yellow.
I remember my Mom having to remove old floor wax then rewaxing the floors.. Floor wax even indoors WILL YELLOW, some more than others.
Sure, it will bring an artificial temporary at best "shine" with nearly no effort..
When the floor wax craze started, there was plenty of talk, now, fast forward a few years and zilch, no talk.. The silence should speak volumes..
You need to look realistically at what you really have, an old, worn out paint surface that is degraded. Nothing short of a brand new paint job is going to give you back any real shine for a LONG period of time.
Even auto waxes are a short term, temporary fix..
Wash your RV then if you have the energy, use a good auto wax and forget about using something that was never designed to be used outdoors.