Universities often like to see students take Biology, Chemistry and Physics during high school.
An excellent option is to take these courses at a community colllege with an in person lab. Ensure that the classes will transfer to the university of your choice and will fulfill any needed GE requirements.
If science courses with in-person labs are not available, then online university courses can be taken.
Another option is online course, such as the Dive course (Christian perspective) listed below. Khan is free option that can also be used.
Another option is to use a traditional textbook approach. If doing this, Apologia provides a solid option (Christian perspective)
