@RAMABADRAN SAMPATHKUMAR Thank you for your post and I apologize for the delayed response!
To get the list of users associate with azure account. From the azure portal select Azure Active Directory and then select Users
Also see links :- https://video2.skills-academy.com/en-us/azure/active-directory/enterprise-users/users-bulk-download
https://video2.skills-academy.com/en-us/azure/role-based-access-control/role-assignments-list-portal#list-role-assignments-for-a-user-or-group
To view the current usage of the services used in the azure account check the cost management and billing section.
See link :- https://video2.skills-academy.com/en-us/azure/cost-management-billing/understand/download-azure-daily-usage
A resource group is a container that holds related resources for an Azure solution.
See link :- https://video2.skills-academy.com/en-us/azure/azure-resource-manager/management/manage-resource-groups-portal#list-resource-groups
Hope this helps!
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