It really depends on your specific situation. Some of the things you could do include:
a) Try to get more involved in the work you are interested in. That means talking with coworkers on what they are doing and maybe coming up with ideas, improvements, etc. that you come up with.
b) Talk with your direct manager. This should probably be your first course of action. Let them know how you feel you could be doing higher added value work for the company. This can be combined with a), where you could propose them some ideas.
c) Work on something else on your own. If none of a) and b) work, at least try to see how the company works, learn some of the processes on your own, carry out a small project related to them in your spare time ...
d) Look for a new internship. This is probably the most extreme and I don't feel like you would want to do this. If you have barely started and this is a long internship, maybe you should look somewhere else where you can better use your skills. Do please first speak with management about how you feel about your job beforehand.
I would still suggest you remain positive, though. I can't tell for how long this has been going on but if you have barely started it is normal that you are not given rather important work, as you still need to get to better know the company and the work life. Wish you the best!