@Armank1 , an “A” in honors or AP comes first :). DS did not have a 4.0 UW, but schools like Yale will want to know that you took a most rigorous courseload. Disclosure: DS is not great at foreign languages, so he did not take the absolutely most rigorous FL, but the GC was able to honestly report that he had a rigorous courseload.
Re internships in fields you hate: NO!!! Give us an example of the choices available to you. Fwiw, you might be surprised. DS interned at a Plasma Physics lab, because at the time he thought that’s what he wanted to do. He learned that working in a lab is not what he wants to do. He wrote software at the lab, and discovered that he enjoyed that. A very valuable internship, everything considered.
One of the benefits of internships is that they’re time bounded, which allows you to explore. But, that said, don’t go for the prestige if it’s a field you hate, but be open to the possibility that you don’t fully know yourself at your age.