The Australian Mathematical Competition (AMC) is a global mathematical competition sponsored by the Australian Mathematical Association, which aims to stimulate students' interest and enthusiasm in mathematics and improve their mathematical skills and problem-solving ability. The score of AMC is mainly based on the player's performance.

First of all, AMC is divided into two levels: A level and B level. Grade A is mainly aimed at students of 10 or below, and Grade B is mainly aimed at students of 1 1 or above. These two levels are different in difficulty, and the A-level questions are relatively simple, mainly testing students' basic knowledge and skills; B-level questions are relatively difficult, mainly testing students' in-depth understanding and advanced skills.

Secondly, each level of the topic is divided into several parts, each part has a different score. Participants need to complete all the questions within the specified time, and then get corresponding scores according to the number of correct answers. The highest score of each part is 10, and the lowest score is 0. The total score of the contestants is the sum of their scores in all parts.

Finally, AMC divides the players into different grades according to their total scores. Generally speaking, subjects with a total score of 90- 100 are considered as excellent grades, those with a total score of 80-89 are considered as good grades, those with a total score of 70-79 are considered as medium grades, those with a total score of 60-69 are considered as passing grades, and those with a total score below 60 are considered as failing grades.

Generally speaking, the score of AMC is based on players' achievements, aiming at evaluating players' mathematical ability and level fairly.