It sounds like you’re still shopping for options. You haven’t taken any of these courses (except maybe calc 1), right? If your plan is to pursue another degree after you finish your dental hygienist degree you have time to figure it out. But don’t take any extra courses until you’ve completed the requirements for your current degree. If you use up all your Pell before you finish you’ll have to pay out-of-pocket.
I think that the courses you listed are the intro courses (first ~2 years) of several STEM bachelor’s degrees, but the fields that are available to students who take them will depend on what other courses they take and what they major in. Physics, engineering, and computer science require some combination of them, but I don’t think those courses on their own will advance someone’s career. Instead of asking what career requires those courses a better idea would be to read college catalogs and find a field that interests you and then create a course plan with your advisor so you can complete it.