Have you seen this question?
Ronald's answer suggests to create a microflow for every page that creates a string variable with the page name and passes it to a sub microflow that will run the logic for the help text.
As far as I know: Not at all.
This information is not passed to the server. What is your use case?
var x = mx.ui.getContentForm().path;
var y = x.split('/');
var z = y.split('.');
var pageName = z;
you can test this code directly from browser console.