can’t be installed on “Yosemite 10.10.5” because OS X version 10.13 or later is required.
I tried to install word and thats what i got
MacBook Pro 15", OS X 10.10
Use LibreOffice.
Your version of Office is apparently too new for the very old version of OS X here.
Or upgrade the Mac to macOS High Sierra 10.13 or later, if this (unspecified) Mac supports that upgrade.