Xbox 360 gamerscore not showing on Xbox one - Microsoft Community

My friends did a competition for gamerscore this month. How tf is this possible and how would you recommend I join next month? : r/xboxone

Gamerscores and Achievements carry over from Xbox 360 to Xbox One

Xbox 360 Gamerscore Boosting (Best and Worst Games)

Xbox 360 Dashboard Update to Include Instant Messaging

Xbox 360 gamerscore not showing on Xbox one - Microsoft Community

Xbox 360 sign in - Microsoft Community

Xbox One's new Achievements system explained, time-based Challenges don't reward Gamerscore - Polygon

Microsoft's Hits and Misses With The Xbox 360 Hardware - Game Informer

Coming to Preview: Buy Xbox 360 Games on Xbox One, 16-Person Party Chat and More - Xbox Wire