You have to register on the website. After the creation of your account, you can immediately bet on all the matches.
In your account, via the tab "Create a tournament", fill the name of your tournament of players as well as his password, and select a competition. After validation, you will receive an e-mail with all the connection information.
Yes, Betting Score is a website where all bets are free.
No, there is no prize to be gained on the website. For every successful bet, you will be credited with 100 points on your account.
You can bet only on the results of the matches.