I’d like to disable the SEO score inside the rank math interface

Hello,

Thank you for contacting the support.

Unfortunately, we do not have an option to remove the SEO Score from the backend.

However, you can use this custom filter with CSS to achieve the desired output:

add_action('admin_head', 'remove_seo_scores');
function remove_seo_scores() {
  echo '<style>
    .score-text, .rank-math-column-display.seo-score{
	display: none !important;
    }	
  </style>';
}

You can add the filter by following this guide:
https://rankmath.com/kb/wordpress-hooks-actions-filters/

This would also remove the scores in the post editor window.

Hope this helps.

Thank you.