Make all shop items description boxes the same size

is there a plugin that can help or css?

Try this code:

add_filter('the_title', 'modify_title', 10);
function modify_title( $title ) {
  if ( is_woocommerce() || is_product_category() ) {
    if ( strlen( $title ) > 12 ) {      
      $title = substr($title, 0, 12).'...';
    }
  }
  return $title;
}

The ’12’ is the maximum number of characters you want to allow. Adjust the number to your preference.

The code goes in functions.php for your child theme or you could use the “My Custom Functions” plugin or similar.

Thank you but that cuts the title, my product titles are not so long , they can fit in two lines basically, but some of them are just one line long
this is my store
https://tienda.homeservices.co.cr/tienda/

OK. You can get some regularity by specifying a minimum height for the title block with this custom css:

.woocommerce-loop-product__title {
  min-height: 46px;
}

Custom css can be entered at Appearance > Customize > Additional CSS

However, your images have different aspect ratios, so they will show the same width but their heights will be different. Its possible to force the image heights to be the same but then there will be some distortion.

This will hide the dots over the page numbers:

.page-numbers li {
  list-style: none;
}

That works!, thank you very much!
Thank you for your help.