In this documentation, you'll learn how to edit the 'Apply Coupon' button text on the checkout page.
Here's what we're going to edit:

Follow along:
Step 1: Go to Loco from your WooCommerce dashboard
Click on 'Plugins' and select 'WooCommerce'.

Step 2: Search for the 'Apply Coupon' button text and edit it

Make the changes as per your requirements.
Here's the final output:

This is how you can edit the 'Apply Coupon' button text on the Checkout page.