There is no easy way to do this.
You could create a helper object where the user can enter the amount. If you set this amount, trigger a data source microflow that retrieves the data with the limit filled from the helper object.
Again, this isn't a nice solution, but it should work.
You need a way to access the API and then change it. one option could be to go with mendix client api using html widget or javascript action but I think the API is changed as I faced issue in accessing the listview.
https://docs.mendix.com/apidocs-mxsdk/apidocs/client-api/
// Get the list view widget
var listView = dijit.byId("ListView1");
// Set the page size to 20
listView.setPageSize(20);