The status bar in the lower middle of the screen can show the number of items that appear in the results window. PI Log will append this status to the log file.
Here is a macro that logs project quantities to a file:
PI Log C:\Temp\PI Logs\Project Quantities for %NAME.txt
Select None
Search Type Contains Stand
Search Type Contains Control
Search Type Contains Strict
Search Type Contains Global
Search Type Contains LVClass
Search Type Contains Library
PI Log