There are skilled jobs which require math and intelligence - but no college degree. You can become a computer programmer without a college degree. You will still have to know and understand math and practice for many hours to acquire the software development skills needed to get a job, but it happens every day.
Another such job is elevator installation and repair. Working with such large equipment safely, and installing and repairing elevators so that others are safe is very important work. Equally important is that the person doing this work be intelligent a diligent. If you think that describes you, then perhaps it is a field you can pursue.
Recently, local governments have recognized the value of a highly skilled workforce without a college degree. The Governor of Alabama announced Alabama Works! Success Plus initiative, which aims to add half a million Alabama residents to the workforce who have high school - plus credentials.
There are books about Success Without College that are general in nature and written more for anxious parents than young people, like the Linda Lee book Success Without College. But if you are a young person who wants direct answers, then $uccess Without College - Roadmap to Software Developer is the book for you!