Retrieving files from Norton Cloud

Hi, I am looking for a solution on how to reinstall files onto MS Office 2016 edition.
Recently had a repair carried out on PC which removed HDD (was not necessary) and as a result all files etc on PC were lost.
Did attempt to download on 2 occasions, but as some data was originally on previous computers. the continuity onto spreadsheets has been lost.  Hence, I have partial listings.

I note from "cloud" that although I have had 4 computers over the last 20 years, there are in fact SEVEN segments showing.
Basically, what I trying to do is restore onto MS Office 2016, in the hope of regaining access to various spreadsheets.

As a long shot, is it possible to review ALL downloads, and copy/paste onto new spreadsheets??
From the above, it is obvious I have little knowledge as to "What goes on behind the screen" but would appreciate any info available in order for the info to be reinstalled and i able to use.
Any help would be very much appreciated.

Thanks.