How do i claim the american opportunity credit

You cannot claim a credit if you are, or can be, claimed as a dependent by someone else.

There's a new urban myth among college students that says they can get a $1000 from the government just for filing a tax form. For most of them, they simply aren't eligible. A full time unmarried student, under age 24, even if you don't qualify as a dependent, is only eligible for the refundable portion of the American Opportunity Credit if he supports himself by working. You cannot be supporting yourself on parental support, 529 plans or student loans & grants. It is usually best if the parent claims that credit. 

Reference: Line 7 instructions for form 8863. https://www.irs.gov/instructions/i8863

For more details,  see this  https://ttlc.intuit.com/questions/3383321-why-didn-t-i-get-a-credit-or-deduction-for-education-expen...

 https://www.irs.gov/Individuals/AOTC

If you are eligible or if you are the parent of a student-dependent 

In TurboTax (TT), enter at:

Federal Taxes Tab (Personal for H&B version)

Deductions & Credits

-Scroll down to:

--Education

  --Education Expenses and Scholarships