702.3. Forgetting to Score a Point [No Penalty]: A player is entitled to a point from conquering or holding a battlefield but fails to track it.
702.3.a. This does not apply to points that would be scored from card triggers such as Ahri, Alluring.
702.3.b. Remedies:
702.3.b.1. If the correct score can be determined and no more than a full round cycle has passed, increment the appropriate player’s score to that total.
702.3.b.2. Otherwise, instruct the players to continue playing.