Starting with the Merriam-Webster dictionary definition of helpful, it means to; making it easier to do a job, deal with a problem, etc. : giving help: willing to help other people. To put a fine point on how being a scout being helpful is we just are.
The scout slogan is “Do A Good Turn Daily”. Just so we can fulfill our slogan a scout is always on the lookout for some way to be helpful. In my experience most people just by nature are helpful, however, if you have a task needing done that is difficult or not so glamorous ask a scout. I’ll bet dimes against dollars they complete it without issue.