Is it possible to do lookup in between the schema collection

Can anyone help me out of this

Hi @rajesh_ranjan,

Welcome to MongoDB community!

I am not sure what you exactly mean but lookups between collections can be done via $lookup or $graphLookup aggregation stages:
https://docs.mongodb.com/manual/reference/operator/aggregation/lookup/

https://docs.mongodb.com/manual/reference/operator/aggregation/graphLookup/index.html

Best
Pavel