Hi and welcome to our forum,
can't open it, can't rename it. excuse me but as an admin i think i should be the boss here.
That's a combination of how the file/folder permissions from Windows work and the BullGuard Self Protect feature and the fact that the Antivirus Service is on. If that was an actual virus you'd probably be happy it's locked so tight.
I completely understand how a falsely detected game save can cause frustration and I sincerely apologize for the inconvenience. You should normally find it in the quarantine and be able to restore it, but it seems something happened there.
Please contact our Live Chat support so one of our agents can assist you (restore the file, exclude it from scan, get a sample, etc) and document the case, to escalate it.