Hi Dinh La,
Thank you for reaching out to us on Microsoft Q&A forum.
To sign in to Power BI service without a work or school account, you can:
- Sign Up for Microsoft 365 Developer Program: Go to the Microsoft 365 Developer Program and sign up with your personal email to get a free work account.
- Use a Business Email: Set up a business email through services like Microsoft 365 Business or Google Workspace, then use it to sign up for Power BI.
With these options, you'll get a work account that allows you to access Power BI service.
If you are still facing any issue, please let us know in the comments. We are glad to help you.
If the information is helpful, please Accept Answer so that it would be helpful to community members.
Thank you.