NRVE point redemption will not be available until July 2019.
Provided that you meet the points redemption requirements press the Redeem button and provide a NEO wallet address to redeem your points as NRVE tokens. Once the process is started it cannot be stopped. Once you have redeemed your points for NRVE there is no way to deposit it back. If you need help setting a wallet, please use the How to set up a Wallet FAQ.
There will be an option to redeem points as FIAT, but it may not be implemented immediately. When that is ready, this FAQ will be updated to provide more guidance.