Add read more to category listing

I have an image where you can click and you will get a list of a particular category ( Pages and posts)
I have used this code below to trim the length of the Page or Post.

What I would like to add is a Read More link at the bottom of this to anyone can go to the page or page they see listed.

Can this be done??

code is

// Excerpt length
function custom_excerpt(){
?>
<script>
// trim sentence by 150 words
	function trimByWord(sentence,wordcount = 150) {
		var result = sentence;
		var resultArray = result.split(" ");
		if(resultArray.length > wordcount){
		resultArray = resultArray.slice(0, wordcount);
		result = resultArray.join(" ") + "...";
		}
		return result;
	}
jQuery(window).load(function(){
    jQuery('.post-entry').each(function() {
     	jQuery(".entry-content ").text(function(index, currentText) {
  
     		return trimByWord(currentText);
		 });
    	jQuery(".entry-title a").text(function(index, currentText) {
   		return trimByWord(currentText,15); // trim title by 15 words
		 });
    });
});
</script>
<?php
}
add_action('wp_head', 'custom_excerpt');

Thanks