Do you think volunteering in a clinic will be good experience for applying to medical school? im doing clerical work but also learning about vaccines.

It helps: but high SAT scores are still most important

Yes: Volunteering (in any field) and as well clinical work will both be great experience to note on your medical school application. Regarding standardized tests, SAT scores are generally not evaluated; more important will be your score on the MCAT (which you take during college) and high marks in your college courses. Best of luck!