Hello @alireza_hsi,
To edit the title you need to go through the child theme.
To know how you can create and activate the child theme go through the link below:
https://wptravel.io/how-to-create-a-child-theme/
After activating the child theme in your child theme functions.php file add below-given code.
function ecommerce_market_remove_cat_titles($title) {
if( is_post_type_archive( 'product' ) ){
$title = 'Shop';
}
return $title;
}
add_filter( 'get_the_archive_title', 'ecommerce_market_remove_cat_titles' );
Hope this helps.
Thank you.