Entra na parte de vba e coloca este código lá, depois só chamar a macro
Sub Macro1()
Dim counter As Integer
For counter = 1 To 10
If Workbooks(2).Sheets("Sheet1").Range("A" & counter).Value = Workbooks(1).Sheets("Sheet1").Range("A1").Value Then
Workbooks(1).Sheets("Sheet1").Range("E4").Value = Workbooks(2).Sheets("Sheet1").Range("B" & counter).Value
Exit For
End If
Next counter
End sub