https://www.pcgamer.com/earn-free-destiny-2-loot-in-the-new-bungie-rewards-program/

Destiny 2: Forsaken isn't the only thing that Bungie rolled out the door today. The studio also unveiled a new program called Bungie Rewards that enables players to earn exclusive items for accomplishing specific in-game tasks. 

First up is an easy one: Sign up for the program and finish the Forsaken campaign by the end of September, and you'll get the 110-minute Destiny 2: Forsaken Original Soundtrack, which includes two bonus tracks from Whisper of the Worm quest that aren't available anywhere else. If you don't want to horse around with the campaign, you can also purchase it outright for, let's see... $777,777.77. (And yes, that's eight 7s. I don't think you're actually supposed to buy it.)