Hi @Anil Kumar Pant,
Thank you for reaching out to Microsoft Q&A with your query.
Please follow the steps mentioned in this document https://learn.microsoft.com/en-us/azure/azure-sql/database/quota-increase-request?view=azuresql to create a request to allot your quota in the region you are trying to deploy the server.
Please let us know if you've further questions or if you're unable to create the request
Thank you!