The credit is non-refundable, but that does not mean it doesn't contribute to you getting a bigger refund. It eliminates a portion or all of your tax. You get back extra withholding.
Check out lines 27-29 to see if there are any entries.
27 Earned income credit (EIC) . . . . . . . . . . . . . . 27
28 Additional child tax credit from Schedule 8812 . . . . . . . . 28
29 American opportunity credit from Form 8863, line 8 . . . . . . . 29
