How to register as an Amazon affiliate
Here's a detailed video that shows you how to sign up for the Amazon affiliate program:
And here's a more brief video:
Friendly note: Keep in mind that you should NOT submit the domain app.azonprofitbuilder.com when signing up as an Amazon associate.
The Azon Profit Builder site is an online app that can create Amazon sites. It's not a finished Amazon site on its own. :-)
You would need to submit a website you own, on a standalone domain. If you don't have such a website, you can ask someone on Fiverr.com to help you with it.