Hi @Hamisco ,
You need to use a slightly different Liquid code pattern. You may want to extract the line item object first, then extract the product object from that line item, and then access the product’s metafields. As the result, you’ll end up with the code like this:
{{ item.product.metafields.cutom.reward_points }}
If the “reward points” metafield is an Online Store 2.0 metafield, you’ll need to add the “.value” part at the end of this code:
{{ item.product.metafields.cutom.reward_points.value }}