If you want to send script manager output to excel, then right click on one of the grids in the "Output" tab and choose "Export Dataset"
But you don't have to use script manager to do that. It would be faster to either run your query in the Editor with F9, then right-click in the grid and choose "Export Dataset", or just set up your export from Automation Designer, or if you are exporting a whole table, then right-click the table from the Schema Browser and choose "Export Dataset".
-John