According to terms and conditions, they are offering 'Cashback Points' that can be redeemed across Reliance Platforms mentioned in the screenshot posted above. The catch here is that those points can be used only up to 20% of your bill value and bill amount must be greater than 200.
For example, if a user opts for the Rs 555 recharge, they will get Rs 110 worth of JioMart points. This, they will be able to avail if they spend at least Rs 550 on their next purchase from any of the Reliance Retail offerings.