Does this girl like me?

I’m in the 11th grade. One day before cl started, I was eating a muffin. This girl I like came up to me and asked “what would you do if I stuck my finger inside you muffin”, I replied “you don’t have enough to do so”. She ended up doing it. In Spanish cl today,(I forget why), but I told her she couldn’t fight. She said “I’m not afraid to hit a boy”. I laughed at this comment. She then marked my workbook with her pen. I was about to walk over to the other side of the table but she told me the teacher was coming. She then threw a paper ball at me with her gum in it. I threw it back at her, but I missed. She then went to the trash can to sharpen her pencil, so I got her. Later that day, I was sitting at my lunch table, and she comes up to me and says “Oh, I bet you won’t fight me”. I replied by saying, “you clearly faking”. I am not sure whether she likes me or no. She just be picking with me. Usually when I end up play fighting with a girl and arguing with her a lot, nothing ends up happening when it comes to us…Also if she likes me how do I get her number. In the begging of the school year she litterally hated my guts for “acting fake”. I stopped and just started acting like myself and now she’s nicer to me compared to before. If she doesn’t like me, I’m ok with that, if she does, how should I go about making her my girlfriend.