What do the numbers mean>

You can tell from this question I am far from a techie.

When I run a full scan there about 650,000 files.

When I run a back up there are about 11,500 files (all except video-I don't have any and e-mail)

When I run Insight (All  files)  there are about 3,000.

If somebody would explain what these numbers mean I would greatly appreciate it.

Thank you in advance.

Harry

The reason for this question now is that about a week ago, a full scan went from about 25 minutes to 1hr 25 min. and the number of files tripled.  I made no changes to my PC and used the removal tool and then reinstalled Norton 360 version  22.5.5.14.  In addition I ran NPE and malwares bytes rootkit scan.

I am using windows 10-home edition