I'll try to make it clear as I know there are a lot of names flying around.
The quest is a Meta product so I think you have to install Meta or Oculus software to use it. For that, I think you can search the internet.
So then, all being well, you can use the device on your computer and view a demo, etc.
LFS has native Oculus support so I believe it can connect to the Quest using the "Oculus" option in the 3D menu (no need to install SteamVR).
But it's a long time since I installed any Oculus software so although I believe that works, I would like it confirmed if you can try that.
About the OpenVR / SteamVR option:
The OpenVR option in LFS allows support for most headsets in the world, and for that, SteamVR needs to be installed.
It is my understanding that SteamVR also can provide access to an Oculus / Meta headset, for programs that do not natively support Oculus. LFS would try to take that path if you select the OpenVR option.