Regarding export, link the value of the checkboxes to any cells in the sheet and export these cell values ... there are plenty of descriptions here on SO how to export cell data.
To link a checkbox to a cell use
Sub test()
Dim S As Shape
Set S = ActiveSheet.Shapes(1)
S.ControlFormat.LinkedCell = "B1"
End Sub
To add this to Gary's Student's code ...
Sub BoxMaker()
For i = 1 To 4
ActiveSheet.CheckBoxes.Add(358.5, 50, 100, 60).Select
Next
Dim s As Shape
i = 2
For Each s In ActiveSheet.Shapes
s.Top = Cells(i, 1).Top
s.Height = Cells(i, 1).Height
s.Left = Cells(i, 1).Left
s.Width = Cells(i, 1).Width
' add Cell Link
' 2nd parameter of Cells(i, 2).Address sets column of linked cell ... in this case column B
s.ControlFormat.LinkedCell = Cells(i, 2).Address
i = i + 1
Next
End Sub
fields will be filled after first click to the checkboxes.