To be eligible for the 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: 

1. Go to Business settings

2. Click Security Centre

3. Find the Verification section