How to score the cudos?

Could you please elaborate on the process of scoring Cudos? I'm particularly interested in understanding the criteria and metrics that are taken into account when determining a user's score. Is it based solely on the number of transactions they make, or are there other factors such as the amount of Cudos held, the duration of their participation in the network, or their contribution to the community? Additionally, how often are scores updated, and what are the potential benefits or rewards associated with having a high score in the Cudos ecosystem?