Hi Dinesh Bodkhe,
Thank you for sharing the experience with us.
I have searched a lot for the error message, you may refer to the suggestion in this similar thread:
CREATE DATABASE permission denied in database 'master' (EF code-first)
If you need further help, considering the issue happens when you try to create database in SQL Server and this forum category is mainly focused on Microsoft 365 related issues and questions, to make sure you get the dedicated assistance, I recommend you post the question in Microsoft Q&A Community. Members and experts are professional with this kind of questions and will help you further. I sincerely hope your question can be addressed by experienced assistance.
Thanks for your patience and understanding.
Hope you are keeping safe and well.
Best Regards,
Tina