This version of Unity is unsupported.
Method group is Obsolete

InteractionSourceState.selectPressedAmount

Obsolete Support for built-in VR will be removed in Unity 2020.1. Please update to the new Unity XR Plugin System. More information about the new XR Plugin System can be found at https://docs.unity3d.com/2019.3/Documentation/Manual/XR.html. public float selectPressedAmount;

Description

Normalized amount ([0, 1]) representing how much select is pressed.

Depending on the InteractionSourceType of the interaction source, this returning a non-zero could represent a number of equivalent things: main button on a blicker, air-tap on a hand, and the trigger on a motion controller.