Hi, and welcome to the Forum!
That's a pretty hard place to heal because every time he pulls his head in or pushes it out, it cracks open. They get those from either another tortoise biting him or from the rough part of the shell cutting it. They try to climb and quickly slip down, too fast for them to pull the head in. You can take a little piece of emery cloth and lightly sand the rough edge of the shell. But keep Neosporin or some other type of antibiotic salve on it to keep it soft. If it gets a hard scab, it will only crack and break open with his neck activity.
You don't need to see a vet.
Oh, your tort is looking much better today. Keep up the good work.Hello everyone....thank you so much for all your help and support. ❤
I went to nearest chemist (drug store) last night unfortunately i could not purchase betadine as it had to be ordered and i wouldnt get it till Tuesday. Neosporin is only available on prescription here (i live in Scotland) I ended up cleaning the abrasion with diluted tea tree oil as i know this is an anti bacterial anti fungal and cleansing properties. I have also applied tea tree cream. I gentled smoothed out the shell with emery cloth. The tort is housed with other torts. It looks much better today. ☺
Thanks again View attachment 180488