The only risks for HIV in adults are:
1) Having unprotected anal or vaginal sex, or
2) sharing intravenous needles with IV drug users.
HIV isn't transferred via your hands or your fingers, no matter what. It is transmitted by inserting an unprotected penis into a vagina or anus. HIV is not particularly easily transmitted, and if it were transmitted via minor cuts and scrapes, everyone in the world would have HIV by now.