To enter/edit/add property tax:

1. Open your return (or continue if open).
2. Click on “Take me to my return” if applicable.
3. Type “property (real estate) tax” in Search box (upper right-hand corner of the screen)
4. Click on “Jump to property (real estate) tax” link.
5. Answer screen interview prompts.

Please see screenshots below.

...and if that doesn't work, I have another solution....to stop any "Blank" page from appearing when you enter one of the Deductions&Credits sections.
 
(Windows Desktop software users only)

I typed in what is recommended in the search box and I get another window that opens "Top Questions" and it just sits there with "Searching" in the middle of the window.  Nothing comes up to click on.

Then go back to the normal entry place ...but shut down TTX first  and follow this procedure to restart Turbotax:
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... this is the likely issue with anyone with a blank page during the running of Desktop TTX software.

.......TTX should only be installed and run as an Administrator..not in some guest account without administrator privileges...but it's hard to know each person's exact setup.

Exit TurboTax....then:

 1)  right click TurboTax 2018 icon

2)  Select  … Properties

3)  Select the  Compatibility tab

4) In the "Settings" box … check the box to "Run this program as an administrator"
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This has fixed the problem for a number of users now.