Based on the search results, it seems that the difficulty level for the Rec mode in NBA 2K24 is not exact to any in-game difficulty. However, according to what has been heard, the Rec mode is somewhere between All-Star and Superstar, closer to Superstar. It is worth noting that there are six difficulty levels in NBA 2K24: Rookie, Semi-Pro, Pro, All-Star, Superstar, and Hall of Fame. The difficulty level affects the rewards you receive, with higher difficulties providing greater rewards. To change the difficulty level, you can go to the games main menu, select Features, and then open the Settings menu.