Q. How do you cite from Statista dosier in Harvard Style?

We do not have access to Statista but according to our guideline it shows a drop down for the different formatting styles. See if Harvard is included in the drop down.
If that doesn't work, please contact your university library. You have contacted a community college library in Texas, College of the Mainland. We serve freshmen and sophomores (undergraduates). You will want to contact your university library. The librarians there will be trained in answering this type of question, and will have access to the resource you mentioned.