Hello,
Thank you so much for purchasing our theme and contacting our support center.
Yes, Google always scores with 20-40 points mobile performance for 99% of websites built with WordPress. To get more points you need to have a really light page. For example remove all sliders, carousels and leave a few banners and products only. Then you will get a high result. But usually, our theme works very fast on mobile devices and don’t have any problems with performance. We suggest you to test it on a few mobile devices and you will see that there are no real performance problems. Also, read this article from WP Rocket team that has a huge experience on WordPress optimizations https://docs.wp-rocket.me/article/85-google-page-speed-grade-does-not-improve
Regards
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