backend of rv drags going up my dr.way

best to fill in drive way to make less angle==concrete , wood ,or asphalt

Depends on RV, How bad it drags and the terrain.
My "B" will drag unless I enter/depart at an angle. I have grass on either side of drive that I can drive on. I once had a 5th wheel that had little dolly wheels on the back. If Your vehicle is a "B" or "C" the little wheels may raise the rear too high and the pulling tires lose traction. You can add Air Bags to any vehicle. You could maybe re-design your drive as I had to do that to keep the wife's car from dragging.

Here are some possible solutions for your class B.

1. Put skid protectors or wheels on the back of the RV
2.. If your driveway is steeply pitched, you can use some aftermarket or wood ramps to change the angle.

What make and model RV?

If a towable is your RV hooked up properly? ( LEVEL?)

Or do you have a step driveway?

I have wheels at the back of mine. Bolted in the frame. Looks like this but these are clamp ons. Its the only pic i can find to show what I mean...