Илья

$arr_tovar = $result->products;
$params = [
    'headers' => array(
        'Authorization' => 'Basic ' . base64_encode( 'admin:123123123' )
    ),
    'body' => [],
];

foreach ($arr_tovar as $item) {
    $params['body'][] = array(
        'name' => $item->name, 
        'status' => 'pending', 
        'categories' => array(
            array( 
                'id_iiko_категории' => $item->productCategoryId 
            )
        ),
        'regular_price' => $item->price
    );
}

$api_response = wp_remote_post( $url_site.'/wp-json/wc/v3/products', $params);

$body = json_decode( $api_response['body'] );
if( wp_remote_retrieve_response_message( $api_response ) === 'Created' ) {
   echo 'The product ' . $body->name . ' has been created';
}

print_r( $body );

<?php
$checked = 5;
$count = 5;
for($i = 1; $i <= $count; $i++) {
    $isChecked = $i == $checked ? 'checked' : '';
    echo "
    <input class='rating-input' id='mod{$i}' name='radio-rating' type='radio' value='{$i}' {$isChecked}>
    <label class='rating-star' for='mod{$i}' ></label>
    ";
}