Dynamically Change the SEO Title of a Specific Term Before the Metadata is Saved

add_filter( "aioseo_save_term", "aioseo_filter_term_data" );

function aioseo_filter_term_data( $term ) {

	if ( 12 === (int) $term->term_id ) {

		$term->title = 'Some new title here';

	}

	return $term;

}