Once you've determined the major that you are looking to pursue, academic advisors for that major will generally provide you with a list of classes you're required to take.
Also, you can generally find the list of classes required on the school's webpage that helps to outline the specific requirements for a given degree.
I'm including a link to the school that I attended that helps to outline the classes that I took to get a degree in Business Administration (https://foster.uw.edu/academics/degree-programs/undergraduate-programs/curriculum/options/). This is going to vary widely across different disciplines and colleges, but wanted to give you a representative sample so you know what to look for.
Hopefully this helps!