Hey CAV_SCOUT! No worries, these aren't dumb questions at all! Without context, I can see this being a very confusing thing to stumble across.
This is an adventure for a sci-fi horror tabletop game called Mothership from Tuesday Knight Games. The rulebook is pay what you want. The game itself is very rules-lite, so there's not a lot of things that Wardens/GMs or players need to remember. It's extremely easy to learn even if a person has no experience playing or running tabletop games. You can play it in person, through a voice client, text/chat app, or through a virtual tabletop website like Roll20.
The idea with these types of modules is that you use them in conjunction with the Mothership core rules in order to give your players an adventure to try to survive or a world to explore.
If you've got any other questions, feel free to ask - I'm happy to answer anything! Alternatively, you can join our Discord community and chat with other players and Wardens/GMs. We're a growing community and we'd love to have you if you're interested!