Getting Error messages on ranges - excel

Question

I am getting error messages i that state that variable isn't defined. And VB is coloring this code red If LCase(wb.Range("Q" & i) = "y" Then .AutoFilter and I don't know why.
It's really important that only rows with a "y" in column Q in each range is pasted, and not everything else.
I had to change i to 2 To 500, and j = 2 To 20, but am worried that I might get columns that I don't want pasted into Sheet2(Materials_Estimate). I just want the range columns to be pasted.
The ranges include Sheet2 information as shown in the picture below (B=text, c=text, D=text, F=up to 3 numbers, G=a letter y, H=text, I=a calculation copied from Sheet 1 of the qty*cost)
Can anyone assist me?
[Code]
Option Explicit
Sub Estimating2()
Application.ScreenUpdating = False
'naming the workbook and worksheets and ranges
Dim ProjectBudgeting1 As Workbook
Dim Materials_Budget As Worksheet
Dim Materials_Estimate As Worksheet
Dim LowesFax As Worksheet
Dim HomeDepotFax As Worksheet
Dim SBath1 As Range
Dim SBath2 As Range
Dim SBed1 As Range
Dim SBed2 As Range
Dim SBed3 As Range
Dim SBed4 As Range
Dim SHall As Range
Dim SFP As Range
Dim SRP As Range
Dim SKit As Range
Dim SGar As Range
Dim BuyOA As Range
Dim SFlorida As Range
Dim TargetRange As Range
Dim ActiveWorksheet As Worksheet
'naming the worksheets and ranges in code
Set ProjectBudgeting1 = ActiveWorkbook
Set Materials_Budget = Worksheets("Materials_Budget")
Set Materials_Estimate = Worksheets("Materials_Estimate")
Set LowesFax = Worksheets("LowesFax")
Set HomeDepotFax = Worksheets("HomeDepotFax")
Set SBath1 = Range("Materials_Budget!Supplies_Bathroom1")
Set SBath2 = Range("Materials_Budget!Supplies_Bathroom2")
Set SBed1 = Range("Materials_Budget!Supplies_Bedroom1")
Set SBed2 = Range("Materials_Budget!Supplies_Bedroom2")
Set SBed3 = Range("Materials_Budget!Supplies_Bedroom3")
Set SBed4 = Range("Materials_Budget!Supplies_Bedroom4")
Set SHall = Range("Materials_Budget!Supplies_Hallway")
Set SFP = Range("Materials_Budget!Supplies_FrontPorch")
Set SRP = Range("Materials_Budget!Supplies_RearPorch")
Set SKit = Range("Materials_Budget!Supplies_Kitchen")
Set SGar = Range("Materials_Budget!Supplies_Garage")
Set SFlorida = Range("Materials_Budget!Supplies_Florida")
'Here I'm calling out the column q and looking for a "Y"
Set BuyOA = Range("Materials_Budget!Buy_OrderApproval")
'Here I'm naming the source of the information that gets copied into other sheets
Set ActiveWorksheet = Materials_Budget
'Here is the sheet where the source cells are pasted
Set TargetRange = Range("Materials_Estimate!EstimateTableArea1")
'Looking for the "Y" in column q for duplicating and printing corresponding rows (i) and columns (j)
For i = 12 To 520
Cells("Q", i) = "Row " & i & " Col " & j
For j = 2 To 20
If LCase(wb.Range("Q" & i) = "y" Then .AutoFilter
i = i + 1
Range("Q" & i).Select
i = i - 1
Next q
Next i
For j = 1 To 5
Cells(i, j) = "Row " & i & " Col " & j
End Sub
Application.ScreenUpdating = True
End With
End Sub
[Code/]

Answer 1

I see many errors.
A) You have not declared your objects. For example, you need to declare SBath1, SBath2 etc.. as Range
B) You have declared ProjectBudgeting1 as workbook but then you are using it as a worksheet object.
C) When setting range, fully qualify them
D) Your wb object is undeclared. I would strongly suggest that you use Option Explicit at the top of your code
E) You have an extra bracket ) in wb.Range("Q12:Q" & LastRow))
F) Avoid the use of .Select INTERESTING READ
G) Finally, I would highly recommend on forgetting one word in vba and that is using End to stop a code. Reason is quite simple. It's like Switching your Computer using the POWER OFF button. The End statement stops code execution abruptly. Also the Object references held (if any) by other programs are invalidated.
Here is a basic gist on how your code should look like
Sub Estimating2()
Dim wb As Workbook
Dim ws As Worksheet
Dim rng1 As Range, rng2 As Range
Set wb = ActiveWorkbook '~~> Or ThisWorkbook?
Set ws = wb.Sheets("Sheet1")
With ws
Set rng1 = .Range("Supplies_Bathroom1")
Set rng2 = .Range("Supplies_Bathroom2")
'
'~~> And so on
'
End With
End Sub