@Brenda_1105
From your question, I infer that you are using Canvas via a Free For Teachers account. Admin privileges are not available to users of the free product, and Instructure does not sell individual licenses. Please read through the Canvas Account Comparisons PDF document to learn more about what is available in the paid and free versions respectively.
If your work in Free For Teachers is associated with a specific school, please reach out to them directly to learn more about the support options they are able to provide you.
