Hello I need the API Key for All The Fabric 6 - AOF6 to run it on my Hosting Company

If you need an API key, you can see how to get one here:

https://support.curseforge.com/en/support/solutions/articles/9000208346-about-the-curseforge-api-and-how-to-apply-for-a-key

Alternatively, run the serverstarter on your pc and then upload the files to your host
alternatively alternatively, run the serverstarter jar on your host

What have you done to come to that conclusion?
Why can't it run without it?