A: Yes and no. The native VR version does not support DLC officially. However, you can copy the pancake (flat) DLC .esm files into Fallout4VR\Data and use a mod called Fallout 4 VR DLC Injector to enable them.
Check the boxes for the DLCs and select to trigger the download. PlayStation 5 & 4: Navigate to the Fallout 4 hub in your library. Scroll down to the PlayStation Store section or Add-ons . Fallout 4 Dlc Files Download
If you found this article by typing "" into Google, you are likely looking for a free, pirated version of the DLC. I strongly advise against this for three reasons: A: Yes and no
If you purchased the Season Pass or individual DLCs, Steam usually downloads them automatically. Steam usually downloads them automatically.