If you're accused of copying off another student, it can be a very serious allegation. Are you accused of copying off another student for purposes of an assignment or for an exam? Did you pay the other student for whatever you may have received, the notes, the exam? An allegation of copying off another student is serious.
Any allegation that involves an exchange of benefit for what the person, the accused student may receive, say, paying for an exam, or paying for somebody's notes. Any allegation that requires, say forethought on an accused student's behalf, is considered especially egregious by a school, especially egregious breach of academic integrity or trust.
Those kinds of allegations, if a student's found responsible will be met with more severe consequences, which can include suspension or even expulsion. You should not engage with the school in any capacity until you take the necessary precautions. You cannot depend on the school to do the right thing. Having an experienced academic misconduct attorney advisor will help you best understand and navigate the process. They should be involved, as early as possible, in an academic misconduct case.