To run an advancement report to bring to the Scout Shop in Scoutbook Plus (formerly Internet Advancement,) Click on the Scoutbook menu item to the left on the Roster Page. Then click on your unit in Scoutbook, then click on Reports and run the Needs Purchasing Report. More help is here.
There are a number of reports available in Scoutbook Plus by clicking on Reports to the left of the Roster, and then clicking on the Reports tab at the top.
You may also utilize the reports available in Scoutbook, by clicking on Scoutbook to the left of the Roster.