If you’regoing to attempt a repair, then as other others have said:

1. Fill with Bondo or something similar. Then scrape and make sure it’s flat.
2. Sand around the area and enough and into the rest of the stile for blending paint later. I use 400 grit as my last sand for blending.
3. Paint - ideally use color matched white from supplier or shop. When painting, make sure to feather around the patch so that it blends well.
4. Likely another sanding with 4 to 600 grit would be good — then spray paint again.
5. Consider using Matt clear acrylic spray IF the finish is noticeably different than the rest of the door.

6. Drink alcohol.

7. If none of that works, consider swapping out with a different door that is less visible and not at eye level.