Where did I suggest such settings?
And again: as long as the extended tags dialogue does not show a rating field (POPULARIMETER, RATING MM, RATING WMP etc) somewhere, the column will remain empty.
As a lot of settings seem to be applied more or less randomly, I strongly suggest that first of all you try to find a file with an existing field POPULARIMETER.
And all further testing and customization then uses this file as test object.