MAX of Highlighted Cells

[Whylucky]

So i have a code that is highlighting cells based on a case selection made by the user. After the cells have been highlighted though i would like to find the maximum of the highlighted cells in there own respective columns. Is there a way in my counter that every time it highlights it remembers the row to pll down later or is there an overall way of just finding the max of only highlighted cells? I attached the beginning of the code so you can get an idea of what i am trying to do. Thank you in advance.

If loadout = 1 Then


    Range("R8").Select
    Range("R8").End(xlDown).Select
    b = ActiveCell.Row
    Range("A7:T" + CStr(b)).Select
    With Selection.Interior
        .Pattern = xlNone
        .TintAndShade = 0
        .PatternTintAndShade = 0
    End With


Range("V8").Select
Range("V8").End(xlDown).Select
a = ActiveCell.Row


For i = 8 To a
Range("V" + CStr(i)).Select


 If InStr(1, ActiveCell.Text, "B") Then
        With Range("O" & ActiveCell.Row).Interior
            .Pattern = xlSolid
            .PatternColorIndex = xlAutomatic
            .color = 65535
            .TintAndShade = 0
            .PatternTintAndShade = 0
        End With
    End If
        
    If InStr(1, ActiveCell.Text, "C") Then
        With Range("P" & ActiveCell.Row).Interior
            .Pattern = xlSolid
            .PatternColorIndex = xlAutomatic
            .color = 65535
            .TintAndShade = 0
            .PatternTintAndShade = 0
        End With