Yes. Show the points a customer will earn on product pages, for example "Earn 45 points with this purchase". In the cart page and cart drawer, show the points for the whole cart and the rewards available.
For product pages and the cart page, you add the blocks in the Shopify Theme Editor. For the cart drawer, you turn on the "Cart drawer block" app embed. If your theme doesn't let you place a block where you want it, our support team will help, free of charge.