Those are social sciences there isn’t however a social science.
That's great but you said:
"there is no legitimate social sciences."
Also this is nonsense like saying there is no physics because when it comes to study it's broken into subfields.
As for the rest of your nonsense all science is, is:
A systematic method or body of knowledge in a given area.
Psychology is absolutely a science. As for history you're probably right that in and of itself it is not a science but it is a core part of much of the rest of the social science fields, this however doesn't do much to further your argument that the social sciences as a field are illegitimate.