To find the highest number of points that MJ can score in a game, you start with her average score and then add the maximum fluctuation.
MJ's average score: 52 points
Fluctuation: 11 points
To find the highest score:
\[ \text{Highest score} = \text{Average score} + \text{Fluctuation} = 52 + 11 = 63 \]
Thus, the highest number of points that MJ will score in a game is 63 points.