1. Open Play Store, go to Audiobooks

2. You will see a banner with Your Reward amount as Shown in below Image


3. Click on the banner & Proceed You will be asked to claim the reward

4. Claim the Reward now, it Will be Credited to your Reward section.

You can Also check the rewards from Playstore Side menu >> Account>>Rewards>>Your Reward balance.

TC – Valid for ₹400 discount against the current store price of an audiobook from eligible titles on Google Play.
Discount may only be applied to eligible titles with an on store price greater than ₹400 before tax is imposed.
Open to participants based on purchase history.
Discount applied at checkout.
Valid in India only.