I want to take the police civil service exam, but I have a secondary school education. What kind of college certificate should I take for the police exam? I can only learn how to do it in the evening

I want to take the police civil service exam, but I have a secondary school education. What kind of college certificate should I take for the police exam? I can only learn how to do it in the evening or on Saturday. First, search the police announcements in your province in previous years to see if full-time unified recruitment education is required. If not, you can apply for a degree in adult education, and you can study by yourself without going to school. Those who require full-time unified recruitment education must go to a full-time unified recruitment college or undergraduate course.