I'm using zBrush on Windows 10, and the right-click is not working, is there a way to fix that?

It is possible that you need to remove the cheek that allows you to use Windows Ink with zBrush.

You will need to first add zBrush to the Application row. The below link will walk you through that process. 

Link: https://solutions.xencelabs.com/en/support/solutions/articles/67000544218-how-can-i-make-custom-settings-to-a-specific-application-

Once you have added zBrush to the application row, select the icon so that the Yellow bar is under the zBrush icon. Then in the lower section, un-check the Windows Ink box. See the image below.

[1] Shows the use Windows Ink box and un-checked and not being used for the selected application.