There is no risk from the handjob, even with the spit.
In theory, there could be a risk from rubbing and grinding for herpes, hpv and syphilis, but the risk is really low. It doesn't sound like there was prolonged exposure, like there would be if you had sex.
I wouldn't worry about this at all.
I might worry about COVID, though. You were in a club, and unless you're in an area with super low rates of it, getting a lap dance/handjob/etc isn't social distancing.
Okay I completely believe you and I feel better but now my scrotum and the skin under my foreskin has been itching. Do you know what this could mean?
Ohhh okay My dermatologist told me I had dry skin and I had noticed a lot of dryness lately but it’s been months since I’ve had issues or pain like this from dryness so I was a little concerned