What is the highest score ever achieved in Mario Kart Tour?

As of the current knowledge available, no official record exists for the single highest score ever achieved in Mario Kart Tour due to the continuously updating nature of the game, with new tours and challenges being added. The scoring system in Mario Kart Tour depends on numerous factors, including the level of the drivers, karts, and gliders; driver, kart, and glider combinations; levels played; actions performed during a race; combo count; and the tier of competition one is playing in. These variables make it such that scores can vary significantly from one player to another. High scores are often shared on social media and forums by individual players, but without an official leaderboard or registry, pinpointing the absolute highest score is not practical. Players frequently achieve scores in the millions when maximizing all possible point-boosting strategies.