How to see when scans were done and Liveupdate ran (automatically set)

I am using Mojave on an iMac.  Is there a way to see when the last scan was done? Scans are configured to be done automatically. I have the impression that they are not being done, just as Liveupdate doesn't happen except if I trigger it.

Is Norton maintained and updated for Apple computers or it is just a waste to pay for it and imagine that it offers protection?

Thanks.