Tanmay Chauhan Greetings & Welcome to Microsoft Q&A forum!
Which model are you try to deploy?
Do you have required permissions to deploy the models? See Role-based access control in Azure AI Studio
Also, add the Azure AI Administrator role from the Azure Portal.
Goto Azure Portal --> Select Azure AI Service( Azure AI Studio) -> Access Control (IAM) -> Add Role Assignment -> Select Azure AI Administrator role.
Once Added please wait for for some time at lease 10-15 mins.
Refresh the page and try the deployment.
I hope this helps. Do let me know if you need any further help.