how are the ranking service group management website dashboard are made
Ranking Service dashboards can be complex. You’ll need a framework, you’ll need to create the HTML for every page, and you’ll have to use javascript or python to program every page.
i think I also need a Bootstrapper
You don’t need bootstrap but the learning curves on most frameworks are very difficult to understand.
Vue.js - The Progressive JavaScript Framework | Vue.js (vuejs.org)
Remix - Build Better Websites
Are all great frameworks but to put it simply they’re really really really hard. If you want a personal ranking service there is almost zero point in making a dashboard and simply using an API.
do i also need a Roblox API
Depends on what you’re trying to manage.