Mento v2.0.0 contracts are configured via Celo Governance Proposals. The parametrization and deployment details can be found in the Mento-Deployment repository and in corresponding governance proposals. This config contract contains the smart contract and economic parameterization.
Since governance can change these parameters, what is deployed with this configuration is not necessarily up-to-date. Current parameterization can be accessed in the Celo block explorers with the deployment addresses.