Yes, we need all the info... Winnebago has made a lot of 33' RVs over the decades and we have no idea what you have.
I'm going to guess you are talking about a compartment door, since the front door of the RV is not on a slide. If my guess is correct you could either order a new replacement part and have it painted. Or probably more practical is just getting a body shop to repair the door and fix the paint.
It doesn't have to be an RV body shop... but it certainly can be if you can find one. I know of RV body shops in Phoenix, Las Vegas, and Dallas. But don't know of one in the Denver area.
By the way, this will likely cost much more than you anticipate. Assuming your RV has a full-body paint job fixing anything to do with the paint is expensive. You may wish to use your RV's collision insurance to pay for this repair.
There are a few RV "graveyards" but it can be real hit and miss on finding the exact right part.
2017 Winnebago Adventurer 37F
2016 Lincoln MKX Toad