excel function TO know if my text is aligned LEFT

RONB1234 

You could create a custom VBA function:

Function HAlignment(rng As Range)
    If IsNull(rng.HorizontalAlignment) Then
        HAlignment = "Undetermined"
    Else
        Select Case rng.HorizontalAlignment
            Case xlHAlignLeft
                HAlignment = "Left"
            Case xlHAlignCenter, xlHAlignCenterAcrossSelection
                HAlignment = "Center"
            Case xlHAlignRight
                HAlignment = "Right"
             Case xlHAlignGeneral
                If IsNumeric(rng.Value) Or IsDate(rng.Value) Then
                    HAlignment = "Right"
                ElseIf WorksheetFunction.IsText(rng.Value) Then
                    HAlignment = "Left"
                Else
                    HAlignment = "Center"
                End If
            Case Else
                HAlignment = "Distributed/Justify/Fill"
        End Select
    End If
End Function

Use like this:

=HAlignment(A2)