I just spend the last hour making my set. I'm really confused because I can't really seem to find a way to import it into my set on the website, then host it and blah blah.

Any help would be appreciated!

you need to use node-hill to host
https://brickhill.gitlab.io/open-source/node-hill/
if you get stuck then get support from the node-hill discord server discord.gg/UtwNeuu