Thank You for posting your query onto the Forum.
Well, if you’re looking for sign-up process using Gmail ID/Account than that’s not possible since Power BI supports only work or school email address. Below is the screenshot as well as article on this provided for the reference -
But if you’re looking to to load and visualize Gmail data in Power BI than it’s possible. I’m providing the below that will guide you through the process.
Also providing few of the links of the videos if helps you.
Hoping you find this useful and meets your requirements that you’ve been looking for.
Thanks and Warm Regards,