Not sure exactly what you ARE saying here.
If it’s Ubuntu - you should be able to run LibreOffice which can be used to operate on most MS Office docs, spreadsheets, power-point formats.
The fact that it runs on an ARM processor isn’t relevant when you have the source code!
Now you can discuss just how well you think LibreOffice compares to MSOffice, which would be a fair discussion, but the software does work on an ARM processor too.
Well on this forum we have a formidable range of knowledge level.....
Guess I would say that not all know you must convert that source code to machine level code....ie....compile it...and test it.