Magento 2 Reward Point Extension

Reward Point Extension for Magento 2 is the key to build loyalty of shoppers to your website effectively. With the extension, your store can easily reward customers for orders, review submission, sign up for newsletter or other actions. Points rewarded to custommers will motivate them to place further orders.
https://bsscommerce.com/magento-2-reward-points-extension.html
Besides Reward Point Extension, you might care about following extensions
https://bsscommerce.com/magento-2-request-for-quote-extension.html
https://bsscommerce.com/magento-2-gift-card-extension.html