I have not observed Women's cricket except for on TV. The top players are all very good. From what little I have seen of woman's cricket at club level. There are some very good bowlers and then a variance in the batting abilities. Some good batsman and then some beginners. Yet everyone appears welcome and everyone is patient with everyone. So as a beginner you will fit in.
Even though you know the game from having watched it - there is no substitute for playing. So you will have to be patient at first. My recommendation is to find a good bat you can purchase and then go along to the nets for a hit with a team mate and get some coaching and just do your best the first time. Then go home and practice all the shots you have seen on TV in front of the mirror. If you practice for 10 minutes every day in front of the mirror you will improve quite quickly (along with team practises and individual net sessions).
Bowling is quite difficult for an adult to learn if you have never done it. Try practising your action at home in front of a video of cricket until you think you can do it well then turn up at the nets and give it your best.
Auckland 47,103, 27, 269*, 59, 118