Question: How to disable tax for specific products from admin dashboard ? 
I set up the tax, and then set the tax class to none the product page, but for this product also considers taxes

Answer: 
You can try to put a path in your **`requirejs`**, like below: 

```
var config = {
   "map": {
       "*": {
           ...,
           "Magento_Catalog/js/validate-product":"Custom_Module/js/validate-product",
           ...
       }
   }
};

```
Did you take a look at the developer docs at all. This contains some examples on how to override core js.

<https://devdocs.magento.com/guides/v2.3/javascript-dev-guide/javascript/custom_js.html>

Apologies if I have misunderstood