expression.Kerning
expression Required. An expression that returns a Font object.
Example
This example sets the minimum font size for automatic kerning to 12 points or larger in the active document.
ActiveDocument.Content.Font.Kerning = 12
This example displays the minimum font size for which Word will automatically adjust kerning in the selected text.
If Selection.Type = wdSelectionNormal Then
MsgBox Selection.Font.Kerning
Else
MsgBox "You need to select some text."
End If