So I know that you can create websites on repl.it but I can't figure out how to publish them. Can you help me?
Websites are automatically published. You can link it to a domain if you'd like. Some instructions here https://docs.repl.it/repls/web-hosting
Sometimes, however, it's not ideal because when you're working on the website you're destroying the experience for your users. So we're working on a publish step that would create some separation between the authoring environment and the production one.
I don’t think you publish them, they just run for as long as the repl is open. There was some big stink a while ago about some application that kept your computer/repl on for you, but that’s about it I’m pretty sure.