Hi, I am Dr. Peter and would like to help.
1- Where exactly is scratch, where the collar was?
2- Is he licking it or using the back legs?
3- Have you checked for fleas?
sort of where the collar was its on the bottom of his jaw down his neck
hes not trying to lick it and i checked for flees and ticks
The first thing you need to do is make certain he is not inflicting further damage by licking or scratching. If necessary, you may need to place an ecollar on to stop him from scratching or licking. Clean the area with an antibacterial soap twice a day, dry and apply a topical antibiotic like neosporin or bacitracin. If no significant improvement is seen in 2-3 days have your vet take a look at this lesion.
If you have additional questions I will be glad to answer them.