Magento – How to Get Product Submit URL on Category Page

you can get url

<a href="<?php echo Mage::getUrl('review/product/list', array(
           'id'        => $productid,
           'category'  => $categoryid
        ));?>#review-form"><?php echo $this->__('Be the first to review this product') ?></a>

To get the configurable attribute and their options value for specific product you can use the following code.

// In construct or fist loaded method
// Magento\ConfigurableProduct\Helper\Data $helper;
// $this->helper              = $helper;
                $options     = $this->helper->getOptions($product, $this->getAllowProducts());
                $attributes  = [];
                foreach ($product->getTypeInstance()->getConfigurableAttributes($product) as $attribute) {
                    $attributeOptionsData = $this->getAttributeOptionsData($attribute, $options);
                    if ($attributeOptionsData) {
                        $productAttribute         = $attribute->getProductAttribute();
                        $attributeId              = $productAttribute->getId();
                        $attributes[$attributeId] = [
                            'id'      => $attributeId,
                            'code'    => $productAttribute->getAttributeCode(),
                            'label'   => $productAttribute->getStoreLabel($product->getStoreId()),
                            'options' => $attributeOptionsData,
                        ];
                    }
                }
print_r($attributes); exit(); // Here you will get the all array to do it in html.

For get the products options method is called in above code

public function getAllowProducts()
{

    $skipSaleableCheck = $this->catalogProduct->getSkipSaleableCheck();

    $products = $skipSaleableCheck ?
    $this->getProduct->getTypeInstance()->getUsedProducts($this->getProduct, null) :
    $this->getProduct->getTypeInstance()->getSalableUsedProducts($this->getProduct, null);

    return $products;
}

And for last where you will get its options method called above

   protected function getAttributeOptionsData($attribute, $config)
    {
        $attributeOptionsData = [];
        foreach ($attribute->getOptions() as $attributeOption) {
            $optionId               = $attributeOption['value_index'];
            $attributeOptionsData[] = [
                'id'       => $optionId,
                'label'    => $attributeOption['label'],
                'products' => isset($config[$attribute->getAttributeId()][$optionId])
                ? $config[$attribute->getAttributeId()][$optionId]
                : [],
            ];
        }
        return $attributeOptionsData;
    }