Several scores are calculated throughout the games. You can see them at the end of a match by opening the statistics tab.
Military score[]
Calculated as the sum of the value of your units calculated as (to which a baseline value of 1 is added):
[
production cost of the unit]+[
production cost of the unit]*2
For Goblins and Dwarves, the production cost does not take into account the -10% and +10% modifier (so a Goblin Marauder for instance has a Production cost of 45 for score matters, and not 40 as is actually the case).
Leaders and Heroes have a value of 50, whatever their level.
Knowledge score[]
Calculated the sum of the 
of all the skills you have researched or aquired.
Domain score[]
Has a minimum value of 50, even if you have no domain left.
Depends on the number of cities with different radius, as well as population and building values.
General score[]
Calculated as the sum of the other scores: Military + Knowledge + Domain + Happiness + Seal.