Google SEO pagespeed

Hello team, I have a customer who really likes his page on top of google, and he uses a lot of money on adwords. now he gave me this link https://developers.google.com/speed/pagespeed/insights/ And my question is, do you think, it´s possible to built a site wiht one of your themes that has ca 90% of these outcome. for desktop and mobile. Or what do you think of this kind of tests. I´m happy for any answer... Greetings Marga