https://www.gamespot.com/articles/destiny-2s-clan-features-unavailable-in-game-for-s/1100-6453128/

With Destiny 2 now available in some parts of the world, players are jumping into the game for the first time. What they won't find in Destiny 2 right now are its Clan features. Bungie confirmed on Twitter that in-game Clan features won't be available until later.

"In-game Destiny 2 Clan Features will be unavailable for the first several days after launch. Stay tuned for announcements of availability," Bungie said.