Using oil based products like Neosporin ointment will make scales soft and flake off.
Silver Sulfadiazine is an antibiotic cream for burns and scale rot and safe to use. Betadine is an antiseptic so its used to keep the area clean so it doesn't get infected.
Why the UV lamp? For heat? Snakes don't utilize UV like lizards. And ball pythons are nocturnal.
The burn doesn't look too bad compared to others I've seen. I think it will be fine in the end. Get a thermostat for your heating pad. I'm not a vet, but keeping your enclosure hospital clean and applying betadine and antibiotic cream should be enough in my opinion.I would consult a reptile vet for conformation. Many can advise you through email or phone if you do not have access to one locally. Sounds like yours isn't reptile knowledgeable.
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