السلام عليكم و رحمة الله
استخدم هذا الكود
Private Sub CommandButton1_Click()
Dim ws As Worksheet, x As Integer
Dim L1 As Long, L2 As Long
Set ws = Sheets("Sheet1")
L1 = ws.Range("A" & Rows.Count).End(3).Row
L2 = ws.Range("B" & Rows.Count).End(3).Row
x = L1 - L2
If x = 0 Then Exit Sub
ws.Range("B" & L2 + 1).Resize(x) = Me.TextBox1.Value
End Sub