What's the chance of getting syphilis after fingering a woman?

Finger cuts?: If your partner was infected and you have hidden cuts on your finger, then syphilis infection is possible from the vaginal fluids.

Almost no chance: Syphilis is rarely transmitted by hand genital contact. Maybe small risk if your partner is infected and you had a cut or wound on the exposed fingers, but too rare to be concerned. If you are at risk for STDs, routine testing from time to time makes sense, so maybe have syphilis and HIV blood tests and urine gonorrhea/chlamydia testing now, while on your mind. But not because of this event.