I am not referring to WebiProcessign server.
Kindly check the which version of BO Environment your having.
1) Server:
Login to BO server and check it control panel --> Add or remove programs. ( here you can find the BOserver version)
or
Login to CMC- Settings here you can find the BOserver version)
2) Clinet:
Check it in your system where client tools (Webi rich clinet, UDT,IDT) are installed.
check it control panel --> Add or remove programs. ( here you can find the BO clinet version)
or You will have build number when you logging to BO client tools