You will have to be a lot more specific. I am not sure what you want to check, what criterion, etc
Do you want to check, for example:
Cell A1 of each sheet and they must be identical on all sheets, then A2, A3, etc then
Or
Do you want to make sure that some type of “master list” contains all the NEW entries
Or
Something else?
Could you provide a sheet with couple examples of changes/the same entries and what you want to do with the info.
Steve