Hi Pragnesh,
Access is currently limited and you can raise a request here https://customervoice.microsoft.com/Pages/ResponsePage.aspx?id=v4j5cvGGr0GRqy180BHbR7en2Ais5pxKtso_Pz4b1_xUNTZBNzRKNlVQSFhZMU9aV09EVzYxWFdORCQlQCN0PWcu.
You can find here the list of models and it's region availability :https://learn.microsoft.com/en-us/azure/ai-services/openai/concepts/models#model-summary-table-and-region-availability
Please 'Accept as answer' if it helped so that it can help others in the community looking for help on similar topics.