If you are denied a MEFA Loan, you have options.
Apply for a Federal Direct Student Loan, as you don't need a specific credit score to qualify for that loan. All you have to do is complete the FAFSA.
If you have maxed out your eligibility for Federal Direct Student Loans for the year, your parent can apply for a Parent PLUS Loan. If approved, your parent can borrow the amount needed to fund your college costs. If your parent is denied, you will be eligible for additional funding in Federal Direct Student Loans.
Consider reapplying for a MEFA Loan with a co-borrower. You can have up to two co-borrowers on the loan, so adding someone with a good credit score may help you qualify.
Explore other private loan options. Every lender has different qualifications, and being denied by one lender does not mean that you will necessarily be denied by another.