Burns can get pretty serious and sometimes it's hard to tell right away how serious they are. Secondary infection is a big problem. The photo makes it look a little pinker than pre-shed, but photos and screen settings can make it very difficult to really know the accuracy of colors.
See https://ball-pythons.net/forums/show...-advice-please for some information about finding a vet and a few treatment suggestions. If it were me and I just wasn't sure, I'd be very carefully watching for wrinkles for dehydration, and for blisters, and get him in to the vet ASAP if I saw either of those. In the meantime, I'd replace substrate for something more sterile like paper towels to cut down on infection chance and replace it immediately when soiled, using something to clean the enclosure each time as well. I use f10 to clean my enclosures, not sure if you have that or similar on hand. A soak is going to help him whether its a shed or burn, so maybe do a soak with very diluted betadine.