If you are referring to e-filing, you do not need to attach any forms including Form 1098-T to your tax return unless the program tells you to do so. However, you should prepare all the documentation for future use upon IRS's request. If you are referring to paper-file, you would need to attach the Form 1098-T to your Form 8917.
Per IRS, the Tuition and Fees Deduction was extended through the end of 2020. It allows you to deduct up to $4,000 from your income for any qualifying tuition expenses you have paid. For more information, click here:
Qualified expenses and Deductions