I'm not a veterinarian, and a good reptile vet is better than any advice you can get off the internet.
That said, it looks to me like the toe could be sprained or broken.
Reptiles--partly due to their slow & simpler metabolisms--don't exhibit pain like mammals do.
AFAIK, there isn't much a veterinarian would be likely to do (doctors wouldn't even set DW's toe when she broke it) except watch it as it heals--it's too small. It's the kind of injury that may just have to heal on its own--and most likely will.
In addition to redness/swelling, watch out for darkness, shrinking, or blackness, which could be indicative of necrotic tissue. That could be more serious, and should be taken to a reptile vet.
Best Wishes