Hi Abigail! Really broad question but I think the real question you should be asking yourself is what you want to do after college? Do you want to pursue a graduate degree or PHD? If you're looking at industry work, do you want to work in the oil field or the medical field? Deciding your after college aspirations will help you determine what major will fit you best!
I know that you tagged biotech, chemical engineering, and biomedical engineering, so I'll touch on each of these. For the the biomedical field and biotech field, its a bit hard to enter that industry without a PHD or graduate degree (speaking from the perspectives of some of my peers that are in those majors). Those companies are really looking for specialists that know the area well. The undergraduate degree just doesn't cut it. For my friends that are in biomedical engineering, it can be quite challenging to find a job after your undergraduate degree. The majority of my peers went on to do research or to pursue a medical/graduate degree. The few that did enter the industry went to pretty selective/unique departments (like Baby Care at Procter & Gamble which required medical and engineering applications).
From the chemical engineering side, that's a super broad field where you can enter many different industries. From helping create photovoltaic solar panels to working at a refinery at a big oil company, the job opportunities are super broad and very in demand.
Engineering in general is pretty stable compared to other disciplines and the pay is good out of college. Non-engineering science fields usually have a tougher time breaking into industry and tend to be more research/R&D focused.
I wouldn't be too worried about your major choice. You have plenty of opportunities to change majors and try different things before you commit. My advice would be to talk to someone working in that field or currently in that major to get a sense of what its like. Good luck!