Installing script in the header


i have to install script on my web site. (like pixel Facebook)
The script must be installed in the section on the whole website.
i try the plugin “insert headers and footer” but doesn’t work
im using child version from elementor pro
im also using ELEMENTORS pro
the pluging worker but since i update the new version of sydney pro : doesnt work !

Where should ii have to install the script ?
Thank you for your help

Hello there,

Please share the script you’d like to install. Have your tried TC Custom JavaScript plugin?