The amount of your student loan that you used to pay for tuition is already included on your 1098-T form Box 1 Payments received for qualified tuition and related expenses, so you can't claim the loan itself.
You may be able to also deduct the interest you paid during the year on a qualified student loan used to pay for tuition, fees, room and board, books and supplies for yourself, your spouse, or your dependent is deductible. This includes both required and voluntarily pre-paid interest payments.
Student loan interest is reported on Form 1098-E. If you paid interest of $600 or more on a qualified student loan during the year, you'll receive this form from your lender.
You do not enter the proceeds from the loans. Instead you enter the expenses that you paid for, with the money, As the other reply said, if the loan money went directly from the lender to the school, most (or all) of it is already included in box 1 of the 1098-T. That is, the part of the loan that paid tuition and fees, but not room & board, and maybe not books, is included in box 1.