I had a look at the music website Gramophone for gender stats. This result is the starkest yet. On the Composers page there are 100 composers listed, 0 female composers.
On the composer search tab I searched for a few of the arguably more well known female composers: Hildegard von Bingen, Fanny Mendelssohn, Clara Schumann, Amy Beach and Ethel Smyth. None of them come up.
So 100 composers – 0 women.