Olá marcelo carlos
Tente adpatar a sua necessidade:
Sub salvarArquivo()
Sheets("salvarArquivo").Select
If ActiveSheet.Cells(6, 4).Value = Empty Then Exit Sub
If ActiveSheet.Cells(4, 4).Value = Empty Then Exit Sub
If Dir(ActiveSheet.Cells(6, 5).Value & ActiveSheet.Cells(6, 4).Value, vbDirectory) <> Empty Then
Else
MsgBox "diretório inexistente ou incorreto"
Exit Sub
End If
ActiveSheet.ExportAsFixedFormat Type:=xlTypePDF, Filename:= _
ActiveSheet.Cells(6, 5).Value & ActiveSheet.Cells(6, 4).Value & "\" & ActiveSheet.Cells(4, 4).Value & ".pdf", Quality:= _
xlQualityStandard, IncludeDocProperties:=True, IgnorePrintAreas:=False, _
OpenAfterPublish:=False
End Sub
Veja se é por aí...