It's probably obvious to most people, but I'm going to post this reply just in case someone else needs to remove the valance over the door.
The screws are under the covered "buttons" and those buttons just pull off, or may need a thin prybar to get them started.
The dinette has the same buttons on the side of the bench.
The more stuff I take apart in this trailer, the less secure I feel in it. Well built, it is not.