You can switch to Full Screen view from another view.
Click the Enter Full Screen button in the toolbar at the top of the virtual machine window.
From the View menu, select Full Screen.
Use the +Control+F keyboard shortcut to switch to Full Screen view.
The Fusion virtual machine window expands to fill the full screen (or screens if you have multiple displays and have Fusion configured to use them all). When possible, a new space is created for easy navigation using Mission Control.