Bounce rate is related to the amount of time the visitor spends displaying your page. Therefore, it can be a measurement metric.
For example, let’s say that you have a blog site and you want your visitors to read your detailed blog posts. People should stay in your website to read the text you shared. But if people tend to leave your website very quickly , this is bad for you and you need to change something in your website, like your content or some variable in the pages.