Short answer is that OSSM doesn't store data, but rather leverages the BI Foundation's Semantic layer ... but with more clarity from you we might be able to give you a better answer - or guide you to a solution that meets the need.
If you are asking about a Scorecard Object ... that is a collection of files in the catalog -- I expanded the Scorecard in the sample app v406 and it shows the various perspectives, initiatives, trees & maps associated with the scorecard.
Thank you for the information. All i want to know if OSSM stores kpi scores and objective scores.
No values are stored, it is all on the fly.
if you need to capture them at a point in time then you could easily view the physical sql using the logs and use that as the basis of an ETL to capture your KPI at a moment in time - all of which would be 'custom' ETL development.