As I see you're in high school (or at least that's your level of experience listed) I would actually recommend the opposite of what BayArea suggested. For now.
Before I had enough credits as a stage manager switching from acting, I listed shows I had been cast in under a heading I called "related experience." I also included all manner of technical theater positions I held under that heading too. It shows you aren't just jumping into the theatrical pool randomly, and you did come from somewhere. After about a year of stage managing, I was able to drop acting from my resume, and after two years I dropped the "related experience" heading entirely.
It is a crap-shoot for the reasons BayAreaSM brings up, but if you literally have no credits, or only one or two credits to your resume, I feel like that is more of a turn off to employers than having a handful of acting credits below whatever SM credits you have.