Your subject line says "workbook" but your body text says "sheet".
To copy page setup from one sheet to all sheets within a workbook, just select
all sheets by right-click on a sheet tab then do your page setup on the active
sheet.
Will be done to all.
Note: exceptions..........print range cannot be set, rows to repeat at top
cannot be set.
For workbooks, there is no way except to create a template with your settings
then use that template as the basis for all new workbooks.
Gord Dibben MS Excel MVP