Can we remove or re-name the 'Discount' label on the Shopify checkout page? See reference screenshot
Checkout page limitation & Solution
Unfortunately, Shopify doesn't allow to modify the Checkout page unless you're using Shopify Plus plan. CLICK HERE to learn more about the Shopify plans.
If you're not using Shopify plus plan then it's not possible to remove or re-name the discount label on the checkout page.
If you're already using Shopify plus plan then write an email to our team, and we will write custom script to modify the checkout page according to your requirements.
You can learn about the Shopify restrictions from the screenshot below.