Annie is correct - there is no risk here.
I just want to add that popping these bumps can cause infection, and if you need to get them tested, draining them of the fluids makes it harder.
A syphilis sore is a round, painless sore, not a fluid filled bump.
We were just talking about a similar situation with another guy, and I gave him a link to an earlier post written on MedHelp by a doctor. It's a good explanation.
https://
www.medhelp.org/posts/STDs/Any-STD-Risk-from-Stripper-Touching-Handjob/show/2173021