Yes, it is possible for a judge to score a round 10-7 in MMA, although it is relatively rare. In the Unified Rules of Mixed Martial Arts, which is widely used as a guideline for MMA competitions, a 10-7 round is described as a round where one fighter has dominated the other fighter to an extreme extent, causing significant damage or achieving multiple near-finishes, such as knockdowns or submission attempts.
The criteria for scoring rounds in MMA include effective striking, grappling, aggression, and octagon control. If a fighter clearly dominates their opponent in multiple areas and inflicts significant damage, it could warrant a 10-7 score for that round. However, judges have different interpretations and scoring can vary, so it's not a common occurrence.