Why can’t I click on any of the counties listed in the school district and county selection worksheet on my phone?

Since you are using LIVE, ask your expert.

https://ttlc.intuit.com/turbotax-support/en-us/help-article/product-setup/connect-tax-expert-turbotax-live/L73wOZD5D_US_en_US?uid=lfiz6cgp

If you're having trouble accessing a drop down menu in the app then it might be a good idea to try opening your tax return using the internet browser on your phone.  Just log in to your TurboTax account that way and see if the drop down menu is available there.

@chr15dor19