To show output files in Finder:

Choose Archiver > Preferences and click General.

In the “When a command completes” section, select “Show output files in Finder”.
You can set Archiver to show output files in Finder after a task (such as extracting an archive) completes.
Choose Archiver > Preferences and click General.
In the “When a command completes” section, select “Show output files in Finder”.
When extracting multiple archives at once only the last extracted archive will be shown in Finder.