Follow the steps to understand the Gmail Backup Software
Run Gmail Backup Wizard, type your email address, and click Sign in with Google.
Enter your Gmail password to complete the oAuth Authentication and click Next.
Enable the necessary permissions and click the Continue button.
Choose the required email folders from the list.
Choose the required file saving option from the list.
Migrate Emails from Gmail to Outlook Process Started.
After completing the backup process, get resultant data in selected format.