Login to your SEO Dashboard.

Go to Analytics and select Google Business Profile

Click on the Google Business Profile image to sign in:

Sign in to the Google account related to the Google Business Profile & click Next

Click on Allow to proceed with authorization. 

Choose the website to be connected. If you have multiple websites under your login, make sure you select the one related to this project.

You are all set! Data will be fetched and visible in a few hours after successful integration.