In the ScrollView.Panel you can get the internal item Panel with:
B4X:
Dim pnl as Panel
pnl = ScrollView.Panel.GetView(ItemIndex)
And in the item Panel you can get the internal views with:
B4X:
Dim pnl as Panel
pnl = ScrollView.Panel.GetView(ItemIndex)
Dim cbx As CheckBox
Dim img As ImageView
Dim lbl As Label
cbx = pnl.GetView(0)
img = pnl.GetView(1)
lbl = pnl.GetView(2)