There are two types of screen views in Finale, Page View and Scroll View.
Page view arranges the page in print format.
Scroll view shows the measures in a continuous stream. To change from one view to another, click on the View menu and drag down to your choice. To zoom in, click on the tool and click on the music where you want to zoom in. To zoom out, click on the page while holding down the option key. You can also choose a view percentage by clicking on the View menu, pulling down to Scale View to and over to the desired choice.