This quest is meant to show you how to interact with the LOTRO Store.
This quest must be unlocked on your account, and can be purchased from the LOTRO Store. You received enough LOTRO Points to cover this purchase from 'A Little Extra Never Hurts -- Part 1.'
To purchase the quest, click on the button on the lower left side of the Quest Dialogue window that says Unlock Quest. This will bring you to the web store interface. From there, you can choose to spend LOTRO Points to gain access to the quest.
You can use the store for a multitude of purchases, including access to regional questing, consumable items, expansion packs, craft recipes, cosmetic items, mounts, and much more.