Your tuition expenses are often reported on a 1098-T from your college. If you have eligible education expenses, you can report them in TurboTax and it will determine which credit you are eligible for that provides the maximum benefit:
In the Federal > Deductions & Credits section of your return, scroll down to Education and click Show more.
Click Start/Revisit next to Expenses and Scholarships (1098-T).
Enter your 1098-T.
Continue through the section and answer every question. In the end, TurboTax will determine if you are eligible for an education credit.
Please note that if you are a dependent claimed on someone else's tax return, they must include your 1098-T on their return. You can't claim the American Opportunity Credit if you are listed as a dependent on someone else's return.