Go for it. Even if you don’t know much about science; there are other things a mod can do to improve a community. Deleting troll posts and spam and advertisements, creating and maintaining community rules, adding a nice banner and icon, featuring posts, keeping an eye on possible harassment, fix broken/decayed links … you don’t need scientific knowledge for these, and it may still help the other mods. You can leave the actually scientific discussions to the community members, as long as you manage provide a safe environment to enable these discussions ;)