Hi there,
Just go in Display>Views and look for the shipping file in the checkout.
You then just have to play around with the datas and the translation around these lines:
$price_text .= JText::_('PRICE_BEGINNING');
$price_text .= '<span class="hikashop_checkout_shipping_price">';
if($prices_taxes){
$price_text .= $this->currencyHelper->format($rate->shipping_price_with_tax,$rate->shipping_currency_id);
$price_text .= JText::_('PRICE_BEFORE_TAX');
$price_text .= $this->currencyHelper->format($rate->shipping_price,$rate->shipping_currency_id);
$price_text .= JText::_('PRICE_AFTER_TAX');
You can also look at the translation file to replace the translation of PRICE_AFTER_TAX and PRICE_BEFORE_TAX