@youssef.boudhaouia I wasn’t happy resurrecting an old thread to answer this so I split to a new topic.
To answer your question directly…
document.querySelector(".my-class").click()
However, there could be issues with that call. Unlike IDs, classes don’t have to be unique and frequently are not, so the selector ".my-class" might resolve to more than one element on the page. There are many ways to solve that, but to choose the best one, I need to see more of your HTML - take a screenshot in DevTools and show me the HTML code.