This is the scent gland of my dwarf hybrid Winslow. To me it looks like its plugged/covered over but I am not super experienced with this. My last hamster had a scent gland though she happened to be intersex and never looked like this- I'm unsure if what hers looked like should be comparable to Winslow's.
If it is covered though, how should I go about helping him out? I'd like to avoid going to the vet if possible as it's about a 45 minute drive and our vehicle lacks heating (I live in Canada and its -20 celcius on average). Plus this boy here is about 17 months old and gets pretty stressed out when hes out of his enclosure for longer than ~10 minutes. Though if the vet is what he needs I 100% will not hesitate in taking him there.