In order to be eligible for green badge (Official Business Account), your business will need to go through both 2-factor verification & verified business. We will be able to help you apply, but WhatsApp holds the ultimate right to approve.
Tip! Official Business Account is NOT a prerequisite for using WhatsApp Business API.
To check whether your business is verified:
- Go to Business settings
- Click Security Centre
- Find the Verification section
For more information, refer to https://www.facebook.com/business/help/2058515294227817?id=180505742745347
How to apply for Facebook Business Verification?