Google requires an official document to verify your organization before you can submit your app to Google Play for review.
The organization verification process on the Google Play Console involves few simple steps:
Step 1: Click on upload document option as shown in the below image.
Step 2: Upload the document that is accept by Google as per country or region as show in the below image. You can add or skip the Additional Information as per your need as it is not mandatory.
Google’s verification team reviews the document and information provided by you and if everything checks out, your organization will be verified.
For more detailed information, you can also refer to the official Google Play Console support documentation.