@Hello6 One way to experiment with a different listing setting like that is to set it up as a one-month trial, with only that month open on the calendar, and see how it goes. Even if it might contravene Airbnb policy, that's only going to be a problem if a guest or prospective guest makes a discrimination complaint. That's a big "if," though; it only takes a few seconds for anyone viewing a listing to flag it for discrimination, and the result can be that all of your listings are suspended for weeks until someone at Airbnb finally investigates, with no compensation for your losses. That's a risk to consider.
There is definitely demand for female-only dorms in the hosteling world; plenty of women travelers are uncomfortable with male strangers in the sleeping area, especially in the big industrial hostels where new people are constantly drifting in. But on the other hand, the young generation of western backpackers features unprecedented numbers of people who identify as trans, non-binary, or genderqueer, so having a gender exclusionary space puts you in the prickly position of assessing whether a guest "qualifies" as female and mediating conflicts if they or their bunkmates disagree with your assessment. Keeping the space all-gender-inclusive means you never have to ask a guest's gender, nor decline or cancel a booking due to perceiving them as the wrong one.