You can enter your information even without a 1098-T. However, if they did send one to the IRS, the information will have to match.
To Enter your Education Expenses for form 1098-T:
1. Select "Federal Taxes" at the top of the page
2. Select the "Deductions & Credits"
3. Scroll down to "Education Expenses" and select "Show More"
4. Select "Start" next to "Expenses and Scholarships (Form 1098-T)"
5. Use those instructions, even without a 1098-T. Answer "no" to "Did you receive a 1098-T" and proceed through the interview.