The Home version does not allow the storing the 'last scan results', I mean, only if you open and run avast and then go there to see the results. Closing, you lost the results. The Professional version stores as many scanning results as you want/need and could work with them, I mean, rescan a file, delete it, send to Chest...
Anyway, you should use the 'reports' in Home version, stored here: <avast>\Data\Report