Read range doesn't exsist

as seen ss i want to write multiple sheet name,can i do it bcz it is showing this error.

@mitul_choudhary You cannot read multiple Sheets in that way. Can you tell us what you want to do actually ?

As u can see in ss i’m comparing to “all computers” with “bitlocker”.
now i want to compare all “bitlocker”“sccm”“summus”“sep” with “all computers”

pls guide