My sports photography habit has gotten me out to all kinds of games and I've discovered I really like women's field hockey which is almost exclusively a female sport in North America. I was surprised to find out that men's field hockey is super big internationally, because unlike soccer, people in the US never got the message the field hockey was a huge international game.
Overall women and girls are playing more than, say, 10 years ago. But they still play considerably less than men and boys, at all levels, at least in soccer, and there are many, many more joint injuries.