Change the text “More Details” to some other word

If you are a PRO user, you can directly change all the strings in the job listing and the detail page without any translation plugins or code snippets. You can access this option from Settings > Appearance > Change Strings.

Using Code Snippets

Please go to your child theme’s functions.php file (we recommend child theme instead of the main theme since when the main theme is updated the changes won’t be lost) and add this code. You can also use any code snippets management plugin for easily adding the below code.

function awsm_jobs_custom_details_link( $link ) {
    $link = str_replace( 'More Details', 'Apply Online', $link ); // Replace Apply Online with the required text
    return $link;
}
add_filter( 'awsm_jobs_listing_details_link', 'awsm_jobs_custom_details_link' );

External Resources

https://wp-content.co/add-custom-code-to-your-wordpress-websites/