To see your Project as your Visitors will see it, meaning as an Experience, you have to switch to Preview. When you're done you can switch back to Edit.
You can Tap on the Preview button in the Project menu, or use shortcuts depending on your device.
Say "Switch to Preview", then "Switch to Edit".
Headsets and Goggles¶
Long-tap with both hands or press the controller's triggers next to each others during 2 seconds.
Swipe down the menu to switch to Preview, and swipe it up to go back to Edit.