Invite a girl to the movies. Do I need to talk when I go to the movies? Talk about something? Or just watch movies all the time?

Let's see if she likes the film. If she likes it very much, she'd better not disturb her. But you can hold her hand when she is serious, and then wait until she finishes reading it. It's really nice that you are serious, and she will have a good impression on you. If she doesn't like it, don't say it unless she says she doesn't want to see it. At this time, talk to her. If she is busy with you, she is not in the mood to see a movie.