My dyslexic, dyscalculia child goes to Jemicy.
Here is a link to colleges that Jemicy graduates attend:
https://www.jemicyschool.org/academics/college-counseling/college-acceptances
Your child can absolutely go to a 4 yr school.
Sure you can get a tutor and throw lots of time and money at it or just accept it’s hard for your child, give them a calculator and not have to memorize steps and formulas and life will probably be a lot easier for you and your child. My kid will never be good at math, we embrace technology and move on. Good luck!