frontend/views/basket/cart.php

<?php
    use yii\bootstrap\Html;
    use yii\web\View;
    
    /**
     * @var View $this
     * @var int  $count
     */
?>
<span class="badge"><?= $count; ?></span>
<?php
    echo Html::a(
        Html::tag(
            'span',
            \Yii::t('app', 'Корзина'),
            [
                'class' => 'sub-title',
            ]
        ),
        [
            '/checkout/index',
        ],
        [
            'class' => 'cart-item-link',
        ]
    );
?>