Those injuries are very, very minor and already healing. I really don't think any sort of special treatment is necessary. It does look a bit thin though. Might be carrying a heavy parasite load. If it were me, I would just release where found. If keeping it is the plan, it's critical that you get it eating soon before it gets too weak.

Force feeding is a bad idea, especially since we don't know the reason for it not eating. Most of the time, force feeding is very harmful and I wouldn't recommend it unless it's a very valuable snake and only as a last ditch effort.