Google paid over $6 million and many others do pay. One earns millions to 100,000$/month, so basically bug bounty program is where hackers get paid for hacking and disclosing bugs to parent company, if you want to earn by hacking means this course is for you, this course will help you to get started in bug bounty program.
what all instructor have covered in this course:
first tools: Burp Suite, Browser Plugins, Lots of software in Kali Linux OS
after that all types of vulnerability: SQL, XSS, CSRF injection and many more
then finally methodology of doing bug bounty
so that's all in this course this much is enough to learn to begin with bug bounty
if you want to be one among those ethical hackers then enroll into my course "Bug Bounty: Web hacking" now!