First thing they care about is you paying for those classes.
A distant second is you qualifying for the lowest transferring (numbered 100 or higher) english and math classes.
If you take their placement exams and qualify for english 100/higher or math 100/higher, they don't care whether you graduated any high school.
Do yourself a favor and do as much CLEP as you can. Seriously.
https://www.nvcc.edu/prior-learning/cpl-manual.html
I had to take 8CR of biology. That's 3CR class plus 1CR lab for each of two semesters. Tuition for 8CR will set you back over $1,500. Add books, lab fees, and a whole lot of your time in class and doing homework to finish it. You will have 8CR that's good at NVCC and VA state colleges but will require subjective evaluation and transfer if you go anywhere else.
One CLEP test. I studied for two weeks, not two semesters. I used a few books' previous editions that cost $1 plus shipping (half.com) - Total cost was way under $200. Colleges look up CLEP and just give you the credits that match their classes.