Hi Trishla T,
You cannot get back your deleted module. If the old module is committed and new module is not yet committed, you can re-download the application from team server.
I think it would depend on your data backup policy in Azure. If you have a database backup in Azure you could deploy an older version of your application that uses the old old module and then restore the old database. This would get the old data back and you could work out an export strategy from there. You may need to to create a branch from this old version if you need to make changes to stop the new version removing the data again.