Moving way too fast there, buddy.
You need to establish a relationship first. There are two basic approaches. You can talk first, or get physical first. Just pick the one you’re most comfortable with. Getting physical first is basically doing it on hard mode, so I suggest talking.
To talk first, you ask her something like, “I really like you and would like it if you would be my girlfriend. Would you like to be my girlfriend too?” If she says yes, then you can ask if she would like to kiss you. Once you’ve kissed, you’re in a relationship.
To get physical first, you can start to tease her a little bit by poking her or doing some play wrestling. It doesn’t have to be a big production, you’re basically just testing the waters. You’ll want to say something, so she doesn’t start getting bad vibes about it. Something like, “you are really fun to be around.” If she responds positively, you can try to hold her hand. Enjoy the moment for a bit then you can escalate. Escalate slowly. Don’t move straight for a kiss but don’t dawdle either. You don’t want it to get weird.
Does that all sound like too much to process? It is. Stick to talking. After you’ve had a few girlfriends you’ll be able to grasp the rhythms and dance of romance.