What PageSpeed result should I target?
PageSpeed is Google's measure of your website's speed, and it's important to note that it's been a ranking factor for some time.
But the question that is usually asked is, how fast should your page be? The honest answer is that you should strive to make the page speed as high as possible while making sure you know what you are struggling with. It may take an extremely intense effort to improve your score after a certain point, and sometimes you will find that your website is already performing better than the competition.
If your PageSpeed score is 85/100, it may be difficult, expensive, or time-consuming to get as high as 90/100. If all your competitors are below 80/100, there are probably more urgent priorities to focus on.
Take your competitors through the PageSpeed Insights tool and make decisions based on these results.