To claim the credit, you must have a 1098-T or be eligible for an exception. If you attended an "eligible institution"*, you almost certainly qualify for an exception.
After answering no, in TurboTax, to the did you get a 1098-T question, answer yes to the exception question. You will be allowed to enter your info.
*To be eligible for the tuition credits, the course must be taken at "an eligible institution". The school should be able to tell you if it is an eligible educational institution. In general, an eligible educational institution is an accredited college, university, vocational school, or other postsecondary educational institution, including accredited, public, nonprofit, and proprietary (privately-owned, profit-making) postsecondary institutions. Additionally, in order to be an eligible educational institution, the school must be eligible to participate in a student aid program administered by the Department of Education. If they issue a 1098-T they are probably an eligible institution.
Enter your school at the link below, to see if it's on the dept. of education list.