How do I see iphone screen layouts on itunes?

How do I see the iPhone screen layouts on iTunes so I can move icons from page to page?

Unfortunately, Apple has removed that functionality from iTunes 12.7. All arranging, loading, deleting, etc must now be done from the iDevice.

You can install iTunes 12.6.3.6 which gives you back the old style iTunes and is still compatible with iOS 11 devices.