I used the command below to enable the Super Key Menu.
gsettings set org.gnome.desktop.wm.keybindings panel-main-menu "['Super_L', 'Super_R']"
Command Source: Can I change the Applications Dropdown shortcut to Super not Alt+F2?
I want to know, if I can use the Super Key to hide the Menu after calling it. Currently, I need to use Esc.