Okay I had a formula that was working perfectly, thanks to @Paul Newcome . And it was:
=COUNTIFS({Status}, @cell <> "", {Workstream Name}, @cell = "")
Now my boss wants to add "Open" from the status column. I tried to change it to:
=COUNTIFS({Status}, @cell <> "", {Workstream Name}, [Metric Name]@row, {Status}, ="Open")
But the result is 0. It should show a result of 2 in this cell