You can read more about Stake here: https://medium.com/bolt-global/debut-january-2020-19c2a9f06533
No, Stake is a game of skill and prediction. Knowledge is required to succeed. Aside from predicting a match outcome, users will have to correctly answer a question related to the game to win hence thorough knowledge of the sport is required.
Stake will only be available for select English Premier League matches at the moment. Users and community members will be notified on the inclusion of new sports and/or leagues in future.
We are working on improving the Stake experience over time, and will take this into consideration.