How can I successfully add a script to my checkout page?

Hello,

I am trying to add script to Checkout page but it doesn’t work as described in the images attached;

i tried to find the id of div in html page and it doesn’t exist.

could you please help me to add this script to checkout page?

Best regards

@Redondo

oh sorry for that issue checkout page customization allow only Shopify plus plan do you have this?