If your boat is a Hunter 33 from the 70's/early 80's, it is a vinyl covering that can be cleaned with some aggressive elbow grease and many different cleaners.
If it has multiple dings, holes, tears, or is de-laminating from the plywood bulkhead, you can peel it off with the help of a putty knife and a heat gun.
There are similar kinds of material available to install as replacement, as well as PVC panels that can be used. Or you can sand and prep the bulkhead for fiberglass, fairing and/or paint.
What are your thoughts?