how do i apply for a job if i don't have a resumé because i've never worked before
My best advice for you is think about what you like to do. Then go to a temp agency and let them place you in a job in your desired field . You get a job, job experience, then you have something to start a resume with. Always be a life long learner, curious to learn new things. And if the company you go to work for has education tuition monies...use the program the best you can.
Also go speak to store managers or business owners in person and explain you are looking for a small job to get yourself started. I would not depend on online applications