I added a listview control and five textboxes to my userform. I left them with their default names, so Textbox1, Textbox2,.... Textbox5.
[I populated the listview in the userform's initialise event handler.]
I then added this event handler code to the userform's class module which should give you the general idea:
Private Sub ListView1_ItemClick(ByVal Item As MSComctlLib.ListItem)
Dim c As Integer
TextBox1.Text = .Text
For c = 2 To 5
Controls("TextBox" & c).Text = .SubItems(c - 1)