For the Fallout "pen and paper" roleplaying game, you can download official character sheets, rulebooks, and starter materials directly from the following sources: Official Roleplaying Game Downloads
Free downloads for unit costs, AI mode rules, and the RPG expansion character sheet are available at Modiphius Wasteland Warfare Downloads . download-fallout-the-games-download-zip
A free 64-page PDF on Modiphius containing basic rules and a starter adventure. For the Fallout "pen and paper" roleplaying game,
Rules for community-organized play and tournament booklets can be found on the Factions download page . Fan-Made and Legacy Pen & Paper RPGs you can download official character sheets
If you are looking for materials related to the tactical miniatures games:
Various versions (like 1.1 or 2.0) of these community-made rulebooks can be found on document-sharing sites like Scribd or Internet Archive .