Hi @Elissa_Ikeda,
I found this unanswered question while doing a community cleanup. As far as I'm aware, studio is not available to purchase by individuals. I believe it is generally licensed to entire schools/institutions, but can sometimes be purchased by an entire department instead depending how the Canvas account structure is set up. You'd want to reach out to your local Canvas administrators (usually in the eLearning / IT / Digital Education areas) to see what options you might have.
-Chris
