No religion treats women badly, it’s the traditions and the culture of the people who practice the religion who treat women badly - because women are just treated badly everywhere.
If you’re going to base things on what is written in holy books and their analysis - Torah, Talmud, Koran, Hadith, Bible etc etc etc then the best religion for women is Sikhism as the Guru Granth Sahib explicity states how everyone including women are equal.
The worst are Judaism and Christianity. Read Texts of Terror by Phyllis Tribble as a good starting point for a feminist analysis of the misogyny included in the OT in particular. Islam is quite progressive in terms of the treatment of women in comparison.
Problem is that religion is only one tiny part of how women are treated and valued. For example, the Christian Right, which will elect child abusers like Roy Moore and stamp all over a woman’s right to body autonomy, is just as misogynistic as some of the more strict traditions regarding women in Islam, and is just as comparable to the Jewish women left in limbo as they can’t divorce if their husbands say no.
Religion is a handy excuse for the patriarchy to keep women as a sub class of humans.