They helped a great deal. "Rosie the Riveter" was only a portion of what they contributed with. Many women flew the fighters to there locations for the pilots. Do not sell them short by any means. WW2 was not just a victory earned by men.
It may have been a little different for us in Australia but we were at war with Germany for a couple of years before Pearl Harbor.
On active duty? Women served as nurses.
On the home front and later, overseas? They joined various auxiliary units where they served as clerks, drivers, mechanics, radio and radar operators and, when things became more desperate, some even served in New Guinea as anti-aircraft gunners. Other women worked in factories supporting the war effort.
My sister was "conscripted" from her job in a clothing factory and had to commute to the other side of Sydney to work for Stromberg-Carlsen, at that time one of the world's largest telecommunications companies. There she assembled radios.