You can’t agree to it until you visit the website and actually read it. Your logic doesn’t really follow

Edit: for those downvoting here’s an article from the EFF agreeing with me. https://www.eff.org/wp/clicks-bind-ways-users-agree-online-terms-service

However, courts generally do not require that you actually have read the terms, but just that you had reasonable notice and an opportunity to read them.