@varun2003arora Reddit thread in case you want to go look. 
Verifying Brave Rewards with Gemini is temporarily down for maintenance
Update Jan 25, 2022: Thank you everybody for your patience. We are working with the Gemini team to get everything back up and running. We currently expect Gemini user wallets in Brave Rewards to be back online around Feb 2-3, 2022 (next week).