Lighthouse can generate a nicely formatted HTML report with the scores and results of all audits.
use Spatie\Lighthouse\Lighthouse;
Lighthouse::url('https://example.com')
->run()
->saveHtml($pathToFile);
This is how that report looks like in the browser.

To get the HTML, without save it to a file, simply call html()
.
use Spatie\Lighthouse\Lighthouse;
$html = Lighthouse::url('https://example.com')
->run()
->html();