How to use Vultr´s S3 Object storages?

Hello! This is not directly related to roblox, but basicly I am trying to understand how Vultr´s buckets and HTTP connection works.

Does someone know about S3 Storages? How their file system works, if there is a limit in the file upload?

I really need help i have been stuck with this problem since I did not figure out how to do a script that gets/sends the data to the object storages. Help will be really apriciated

If someone can link me to pages that explain, or pages with code examples.

Thank you!