I just cut both of those access doors off on my car. And that screw is really easily accessable under that door. If you don't want to go the route I did, then just tear those clips out carefully, and if you break them just go get some new clips. Many autoparts stores have assortments of plastic retainer clips, but if you couldn't find the right ones, go to Ford dealer and order some of the exact ones for like a couple bucks. Or just put some screws in instead
