Batch IF doesn't work - batch-file

Question

I made a simple BATCH file for notes, it just deletes a folder, makes a new one, and puts in a file called note.txt and then edits it... for some reason, it doesn't do ANYTHING at all! not even removing the folder, here's the code:
goto start
:abort
ECHO Aborted!
PAUSE
GOTO start
:replace
del /q "D:\Users\Eldar\Desktop\Note Folder"
mkdir "Note Folder"
#echo>"D:\Users\Eldar\Desktop\Note Folder\note.txt"
#echo %note%> "D:\Users\Eldar\Desktop\Note Folder\note.txt"
pause
:start
#ECHO OFF
color e
cls
echo Put the note in here:
set /p LastNote=<"D:\Users\Eldar\Desktop\Note Folder\note.txt"
SET /P note=
cls
echo Note has been saved!
echo also, the last note you saved was: "%LastNote%".
echo so are you sure you want to replace this note with a new one (Y/N)?
SET /P agree=
IF "%agree%"=="y" (
ECHO goto replace
) ELSE (
GOTO abort
)

Answer 1

There are few errors in your script:
del can delete only empty folders. Use rmdir /s /q folder_name to remove folder with files
Remove ECHO in ECHO goto replace
You are using full paths everywhere except mkdir. Is it correct?
My working version:
#echo off
goto start
:abort
echo Aborted!
pause
goto start
:replace
rmdir /s /q ".\TestF"
mkdir "TestF"
echo>".\TestF\note.txt"
echo %note%> ".\TestF\note.txt"
pause
:start
color e
cls
echo Put the note in here:
set /p LastNote=<".\TestF\note.txt"
set /p note=
cls
echo Note has been saved!
echo also, the last note you saved was: "%LastNote%".
echo so are you sure you want to replace this note with a new one (Y/N)?
set /p agree=
if "%agree%"=="y" (
goto replace
) else (
goto abort
)

Answer 2

There appears to be no reason to remove the Note Folder directory or even to delete the note.txt file.
How does it perform if you rewrite it like this?
#Echo Off
Color 0E
Set "LastNote="
If Exist "%UserProfile%\Desktop\Note Folder\note.txt" (
Set/P LastNote=<"%UserProfile%\Desktop\Note Folder\note.txt"
)
If Not Defined LastNote GoTo replace
:ask
ClS
Echo=The last note you saved was:
Echo=%LastNote%
Echo=
Choice /M "Would you like to replace this note with a new one"
If "%ErrorLevel%"=="1" GoTo replace
Echo=
Echo=Aborted!
Timeout -1
GoTo ask
:replace
ClS
Set/P "note=Put the note in here: "
If "%note%"=="" GoTo ask
Echo=Note has been saved!
If Not Exist "%UserProfile%\Desktop\Note Folder\" (
MD "%UserProfile%\Desktop\Note Folder"
)
(Echo=%note%)>"%UserProfile%\Desktop\Note Folder\note.txt"
Timeout -1
GoTo ask
For the benefit of the OP, here is your version of your script with the major flaws removed and with unnecessary lines kept in.
#goto start
:abort
ECHO Aborted!
PAUSE
GOTO start
:replace
rmdir "D:\Users\Eldar\Desktop\Note Folder"
mkdir "D:\Users\Eldar\Desktop\Note Folder"
echo.>"D:\Users\Eldar\Desktop\Note Folder\note.txt"
>"D:\Users\Eldar\Desktop\Note Folder\note.txt" echo %note%
pause
:start
#ECHO OFF
color e
cls
echo Put the note in here:
set /p LastNote=<"D:\Users\Eldar\Desktop\Note Folder\note.txt"
SET /P note=
cls
echo Note has been saved!
echo also, the last note you saved was: "%LastNote%".
echo so are you sure you want to replace this note with a new one (Y/N)?
SET /P agree=
IF "%agree%"=="y" (
goto replace
) ELSE (
GOTO abort
)