JSFiddle - React, Tailwind, and code Playground

HTML

<div class="col search_price_discount_combined responsive_secondrow" data-price-final="5039">
  <div class="col search_discount responsive_secondrow">
    <span>-90%</span>
  </div>
  <div class="col search_price discounted responsive_secondrow">
    <span style="color: #888888;"><strike>ARS$ 503,99</strike></span><br>ARS$ 50,39     
  </div>
</div>

JavaScript

let price1 = $('.col.search_price.discounted.responsive_secondrow strike').text().trim()

let price2 = $('.col.search_price.discounted.responsive_secondrow').html().trim().split('<br>')[1]

let str = "Price1: " + price1 + " Price2: " +  price2
console.log(str)
alert(str)