Create relationship of the user and cpt

set-wp--post-author.php

<?php

$args = array(
    'post_type'      => 'organizacao',
    'posts_per_page' => -1,
    'author__in'     => [],
);

$query = new WP_Query( $args );

if ( $query->have_posts() ) {
	$count = 0;
    while( $query->have_posts() ) {
        $query->the_post();

		$relation = false;
		$post_author = get_post_field( 'post_author', $post );

		if ( $post_author <= 0 ) {
			$id_responsavel = get_post_meta( get_the_ID(), 'id_responsavel', true );
			$users = get_users([
				'meta_key'     => 'id',
				'meta_value'   => $id_responsavel,
				'meta_compare' => '='
			]);

			if ( ! empty( $users ) ) {
				wp_update_post( [
					'ID'          => get_the_ID(),
					'post_author' => $users[0]->ID,
				] );

				$count++;
				echo $count . ' => <a href="' . get_the_permalink() . '">' . get_the_title() . '</a> => Atualizado!<br>';
			}
		}
    }
    wp_reset_postdata();
}