How can I repair scratches on a painted French door?
Another option is to first, lightly sand away all debris which is unsalvageable. Next use a quality wood filler (paintable) to fill dents, valleys &amp; nicks. Use fine grain sandpaper to (patiently) sand over the fully cured filler to a smooth finish. 

The final decision: To match the existing paint (hopefully you have some) or to repaint? Your decision. Of course, you’ll want to match the frame paint. 

If you decide to touch-up, seek help on color matching from a professional at a big box store or a paint store. Prime the raw wood &amp; filler. Paint over the dried primer using a feathering technique to ensure a nice, seamless blend. 

Good luck.