Let's assume that everyone buys it at $40 (even though some buys at $45). Steam takes 30% I think?
That leaves $28 going to Taleworlds. They are self-publishing so no paradox to take part of the cake.
Assuming ONLY 1 million copies, which I think is low (i think closer to 2mil) then they have made 28 million dollars.
TW had around 100 employees in 2016, but it might have gone up since then, and for sure its gone up since they started development, so lets just go with 100 employees. Let's go with the turkish average salary of 19,700TRY ($3,051).
Let's also just count from after VC release which was end of 2014. So lets go with 66 months.
So, 102 employees for 66 months at $3,051 per month is $20,539,332 in salaries. Then there are rent for offices, purchasing costs for equipment, resources, musicians etc etc etc.