What do i do if i didn't get a 1098-T from my previous school because they closed in August 2021. And I have no way to contact them

When asked if you got a 1098-T say no.  On the next question answer that you qualify for an exception.  Then enter your info in the boxes provided.

You’re still allowed to claim an education credit in this situation.  

According to Q20 on the IRS' Education Credits: Questions and Answers page: 

You can still claim an education credit if your school that closed did not provide you a Form 1098-T if:

• The student and/or the person able to claim the student as a dependent meets all other eligibility requirements to claim the credit 

• The student can show he or she was enrolled at an eligible educational institution 

• You can substantiate the payment of qualified tuition and related expenses.

Be sure to keep records that show the student was enrolled and the amount of paid qualified tuition and related expenses. You may need to send copies if the IRS contacts you regarding your claim of the credit.

To enter your education information in TurboTax Online, 

1. Click Pick up where you left off

2. Click Federal in left pane

3. Click Deductions & Credits tab at top

4. Scroll down to Education and click the Show more dropdown

5. From there, you can enter your relevant information.