Not to be confused with Social Season Event, a similar feature in Bloons TD 6.
Social Goals (Team Goals prior to version 4.0) are events in Bloons Pop! where groups of up to 10 players work towards a shared Goal. On each day, the player can join a Social Goal group (chosen by the server) by making progress towards that event's objective. All players earn rewards for reaching certain milestones, but there is also a leaderboard that ranks players based on how much they have contributed towards progressing the current event. Milestone rewards are distributed as soon as the group reaches one, while leaderboard rewards are given when the Social Goal event resets, which occurs daily at 8:00 AM UTC.