Are you sure you qualify? Did you make any withdrawals?
Please read this TurboTax FAQ for additional information on "What is the Saver's Credit?": What is the Saver's Credit?
Please note: There is a link within the FAQ above that will take you to the IRS website where you can do a quick calculation of your possible Saver's Credit. Be sure to use the 2018 Saver's Credit table when calculating.