Hi, @Himanshu Garg Welcome to Microsoft Q&A thanks for posting your question.
I understand you want to know how to restore an Azure database for Postgres single server if its redundancy option is configured as Geo-restore.
Point-in-time restore (PITR) is not currently supported on Geo-restore for Azure Database for PostgreSQL single server. however, you should be able to restore and yes it will create a single server.
also, we recommend migrating to from single server to flexible server as it is getting retired soon.
Let me know if you have any additional questions.
Regards
Geetha