Inconvenience the Iranian government in any way possible, from random hacking attacks to full-on sanctions, although the very governments that frequently trade with Iran and keep their economy afloat don’t give a fuck about human rights themselves, so they couldn’t give a toss about womens’ struggles.
Other than that, sweet fuck all. Odds are we can’t finance these women, and even if we could they would confiscate/freeze accounts, and we can’t arm them without Iranian intelligence finding out damn near Immediately.
Or, or, the big one:
Protest alongside them or invade. A gun pointed at you will get you signing papers and changing policies.