How I can have Name Your Price option in the shop page

Hi @alexeiremedio

Please update our plugin WPC Name Your Price to the latest version 1.3.2 first then add below custom code (How to add custom code?):

add_action( 'woocommerce_after_shop_loop_item', 'woonp_loop_add_to_cart', 99 );
function woonp_loop_add_to_cart() {
	global $product;

	if ( $product && $product->is_type( 'simple' ) && $product->is_purchasable() && $product->is_in_stock() ) {
		echo '<form action="' . esc_url( $product->add_to_cart_url() ) . '" class="cart" method="post" enctype="multipart/form-data">';
		WPCleverWooNpCore::add_input_field_to_frontend();
		echo '<button type="submit" class="button alt">' . esc_html( $product->add_to_cart_text() ) . '</button>';
		echo '</form>';
	}
}