PI Client tool for Excel is called PI DataLink. And PI Builder is mostly used to create/modify PI Points and/or to modify AF Hierarchies, AF Elements and AF Attributes and so on.
Do you have PI DataLink installed on your computer? The ribbon interface looks similar to below.
If you do not see this interface, you may need to follow one of the following options from this KB.
HI Jinmo ,
I have the Pi DataLink tab in excel
How the tag a new current value using excel?