Creating the discount
Step 1 - Open your store's Discounts page and click Create discount
Step 2 - Scroll down to the Discount Kit section, which should now be available, and click Order goal
Step 3 - Fill in the various settings and click Save
Enabling theme components
Order Goal Banner - Open your store's Theme Editor and then head to the cart page. On the left-hand side, click Add block to add the Order Goal Banner.
Smart Upsell - Open your store's Checkout Editor. On the left side of the page click Add app and select Smart Upsell.