AppleScript to Delete Folder

Try:

set pathwithSpaces to "/Users/John/Desktop/This is a test.docx"
do shell script "rm -r " & quoted form of pathwithSpaces

set l to {}
tell application "Finder"
    repeat with f in (folders of entire contents of (POSIX file "/Users/username/" as alias) where name is "Folder") as alias list
        repeat with i in (get items of f)
            set end of l to POSIX path of (i as alias)
        end repeat
    end repeat
end tell
choose from list l

find ~ -name Folder -exec ls {} +

shopt -s globstar # bash 4.0 or later
printf %s\\n ~/**/Folder/*

mdfind 'kMDItemContentType==public.folder&&kMDItemFSName==Folder' -onlyin ~ |
while IFS= read -r l; do ls "$l"; done