Hi there! If you are creating a new app/site, Bubble does all the hosting for you, so when you build your app and deploy the app into “live” mode, it’s up already. If you have an existing domain you want to use, you can set this up as well to link to your new Bubble app with any paid plan.
See: https://manual.bubble.io/application-settings/custom-domain-ssl
bubble.io/pricing