Reparations for black americans isn't an idea that just came out of nowhere, ever since slavery was formally abolished in the USA there were plans to redistribute land to black people which were eventually repealed, and they never recovered economically. There is a very reasonable case for redistributing wealth to at partially redress this generational imbalance.
Women on the other hand were subject to a much more convoluted and uneven form of oppression which was obviously not generational. If women could reproduce asexually and lived in ghettoes (sounds like a 1950s B movie), there would be a case here, but since most women live with men, it's hard to justify a redistribution on the same scale.