Unity Development Refresh Rate

I'm struggling to find something that is a full guide of how to set and/or see what the refresh is in the game you are developing.. Everything says either use the tools that come with Oculus (Support). Which yes install and host a service but it does nothing for me, not sure if its because I'm not using my GPU and just using the headset. But I would like the ability to edit a Unity file and statically set the refresh rate (which file) and/or in the game I'm developing just be able to see in it what the refresh rate and such is. Everything I see and search for ASSUMES way too much..

Keep finding stuff like below but where do you put it.. I just dont create a new file and drop that in there and whala

OVRPlugin.systemDisplayFrequency = 90.0f;
OVRManager.DisplayRefreshRateChanged += DisplayRefreshRateChanged

private void DisplayRefreshRateChanged (float fromRefreshRate, float ToRefreshRate)
{
// Handle display refresh rate changes
Debug.Log(string.Format("Refresh rate changed from {0} to {1}", fromRefreshRate, ToRefreshRate));
}