Hello,
Thank you for contacting Rank Math, and sorry for any inconvenience caused.
Please connect your Google account with Rank Math by following this guide:
https://rankmath.com/kb/connect-your-google-account/
Then, Select the options at Rank Math > General Settings > Analytics:

Clear your cache and check again.
I hope this helps. Looking forward to helping you.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.