How to become an ethical hacker very much depends on your current field of occupation, study or research.
If you are not in a field that is remotely related to computer science, information technology or cybersecurity, you might need to shift into one.
For someone who is at that infancy of their career, this might be an easy task but for others, suddenly changing their field of work is a daring task.
Having a bachelor’s degree certainly helps you snag the job, but you can pass the most beginner-level interview with a general knowledge of networking and operating systems!
For more info (Source): https://www.edureka.co/blog/how-to-become-an-ethical-hacker/