yes i agree ,i made my thread question in very high level and this solution to hide/show a custom folder is not
at this level.Its good for my current use or local use only.I have any external constraint in this domain.its good to know
for me and for other followers.
if the folder name is known with this code can recover the hidden folder with its contents(change attribut an rename it)

cd E:\____ytests\_toTest\yfolder_secure
attrib -s -h "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
ren "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" myNewnameFolder

running this code in cmd.exe (as administrator) and exploring the folder can see the myNewNameFolder visible with
its data.
no need to any password to get the hidden contents and this method is at the bottom of security level.

Conclusion: to secure data embed in a folder need mandatory to encrypt this folder.

Thank you Al for this usefull collaboration.