Welcome back @Lakshya_Gupta
It might be useful to reference the long previous discussion around your cluster, though I doubt anyone will read all of it (again):
Note I do recognize it's a different question(s() yu are asking today.
"if the data only exists on the 5 nodes, will the scroll instantly close on the remaining"
I'm not an expert on the internals, but I would expect no scroll context to be created on nodes with no matching data, never mind "instantly close"?
btw you can see the counts in output of a GET to
_nodes/stats/indices/search
so should not be too hard to validate the behavior