What are my chances of getting into Med school with a C- in Gen Chem and Principles of biology.

Without knowing your MCAT score, 16% of students with a GPA of 3.2-3.39 got accepted to medical school. That ranges from 1% for an MCAT below 486 and 53% for MCAT above 514
https://www.aamc.org/download/321508/data/factstablea23.pdf
If you want to see it broken down by race, go here: https://www.aamc.org/data/facts/applicantmatriculant/157998/factstablea24.html