Board Thread:Help and Questions/@comment-98.15.88.103-20190430090421/@comment-26005122-20190430173709

Yes, you’ll need to acquire that many duplicate Tsums in order to level up to the next Skill Level. Using that Tsum doesn’t increase your Skill at all. It will only increase your Tsum Level, meaning how many points your Tsum is worth.

For example, in order to get Mickey to his max Skill Level, you will need to obtain him 7 times in the Happiness Box. Or use Skill Tickets which each use count as one duplicate Tsum Tsum.