Collect League Rep Rewards
This goal requires you to collect either one, two or three rewards from Battle League Representatives. You can find them outside of Pokémon centers. There is one League Rep per area of the game. You get a reward after defeating a certain amount of trainers in a given area.
Strategy
Section titled “Strategy”While there are many League Reps, there are a bunch of goals that require you to get a specific reward. If you have both the generic and the specific goals, it might be worth combining them.