Salesforce Presence Configurations are stored in PresenceUserConfig entity.

Use SOQL query on PresenceUserConfig entity to query the Salesforce Presence Configurations.

SELECT Id, Capacity, DeveloperName,
PresenceStatusOnDeclineId, PresenceStatusOnPushTimeoutId
FROM PresenceUserConfig

For additional fields/columns, please check PresenceUserConfig sobject/entity.