Before you participate in this remember that Niantic reneged on the rewards for the Russia challenge

LordEmperorRed-PGO

https://massivelyop.com/2021/07/23/pokemon-go-reneges-on-rewards-after-russian-players-achieve-companys-goal/

https://www.reddit.com/r/TheSilphRoad/comments/onn0nw/niantic_fails_to_deliver_rewards_for_wayfarer/

patsufredo-PGO

At least you're unable to participate this challenge now, if you don't set either home location or bonus location in Brazil.