How do I enter my taxes paid in 2018?

What kind of taxes paid?  Federal or state?  How did you paid them?  You enter withholding from the W2 or 1099.  

Did you make estimated taxes?

You can type estimates paid in the search box at the top of your return and click Find and it will give you a link to Jump To it.

OR

To enter Federal or State Estimated Taxes Paid, including a state estimated payment made in January for the prior year, go to

Federal on left or at top.  Personal (Home & Business)

Deductions and Credits at top

Then scroll way down to Estimates and Other Taxes Paid

Estimated Taxes - click the Start or Update button

Estimates paid will be on Schedule 5 line 66 which goes to 1040 line 17.