You may prefer to run your in-engine tests with an actual headset on your face. Follow these instructions to do that.
Following the steps in Connecting Your Headset - Pt.1 Meta Link make sure your headset is on and linked to your computer.
In Unity, make sure the Meta Device Simulator is toggled of “Off”

As long as your headset is correctly linked to your computer, the game will automatically launch on your headset when you enter play mode. From here, you can test small changes in VR without having to build a full version of the game.