2018 is a separate tax year, you will not see anything on a 2019 return if you are owed money on a 2018 tax return.
For your 2019 Earned Income Tax Credit, I would first check the Form 1040 and see if you have a figure for the EIC.
To pull up a copy of your 2019 Form 1040 and Schedules 1 to 3 in TurboTax Online, follow these directions:
Scroll down to the second page of the Form 1040. Look at Line 18a, Earned Income Tax Credit, and see if there is a figure listed.
If you do not have a figure listed, click on "Back" in the left-hand menu. The go to the EIC section and walk through the screens: