There is something that I am wondering about.
University biology classes will contain quite a few premed students. Many biology classes are also requirements to apply to medical school. These classes are often academically very difficult, and at least here in the US will often contain quite a few very strong students.
This leads me to a question: Why did you drop out of high school?
I am specifically wondering whether you will be able to handle difficult university courses after dropping out of high school.
I do know people who had trouble in high school, and who then went to university and did very well. However, this can be a difficult path to take. It is common for this to slow down your education by a year or two or three – which really is not a big deal. However, it can take some amount of time, effort, and rigorous studying to make up for whatever caused you to drop out of high school.
If you want to do this in the US, then your budget will also matter.