Try to replace
Activity.AddView(ScrollView1, 0, 0, FILL_PARENT, FILL_PARENT)
by
Activity.AddView(ScrollView1, 0, 0, 100%x, 100%y)
Why do you use a ScrollView ?
You set the height of the panel you load into it to 100%y the same as the ScrollView height, so nothing will scroll.
You use a standard layout variant, but PanelPmanku has a bigger width and height why?
Then in the DesignerScript you use AutoScaleAll and then you set the width to 100%x and the height to 100%y ?
Attached a small test program.
Best regards.