That's not the access panel, it's the fender lower edge exposed. It's supposed to be covered by the bumper, which appears completely displaced in your photo.
On my own car, for comparison of how these pieces fit together:
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I took this photo to document the small amount of condensation in the headlamp assembly, which has now disappeared. But it's useful to show the "normal" panel alignment.
Here's a wider view, for context. Note the lack of panel gaps in this area.
View attachment 44348
Don't take delivery of that car without all of the issues being resolved first. Please trust me on this, I was once a dealership service manager.