Hi, smolls!
You can use help-file (press F1 when you opened avast!):

  1. Click on the Menu button.
  2. Choose the Last scan results.
    There is another way.
  3. From avast! icon (blue a-ball icon) in the tray choose “Program Settings…” (I don’t know how exactly it is named on English).
  4. Choose “Usual”.
  5. Mark a “Show expansion results of the conductor”.
    Then every time after scanning you’ll see a window with the scan report.