Setting up a Meta Developer Account
Meta is the parent company of Facebook, Instagram and Whatsapp. In order to get access to WhatsApp Business API you first need to register a Developer account. Once you have one you'll be able to create an App which contains all of the relevant tools to associate your number to your business.
Don't worry if this doesn't makes a lot of sense, we'll go through it together.
Before you begin, you need to have access to a personal Facebook profile, this will be the one creating the App and associating it to your business so be sure to own or have the required permissions on your company's Meta Business Suite account as you'll need it for creating the app.
If you haven't created a Meta Business Suite account already click here to learn how to do it.
Register as a developer
First thing we need to do is go to Facebook developers and click Get Started on the top right corner
Don't see a Get started button? Probably you haven't logged in to a Facebook account yet, click on the Log In on the top right corner.