I heard that women don’t customarily say tachanun. So does that mean they should skip that in selichos. If so, exactly what parts should be skipped in selichos?
You are correct in that women don’t customarily say tachanun, so therefore they should skip the tachnun at the end of the selichos.
O:CH 131 Shar Hatzion 15, Teshuvas Machazeh Eliyou 20, Halichos Beisoh 7:7