How can change wordpress comment reply text for specific pages only?

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Code is not tested. But theoretically it should work:

add_filter('comment_form_defaults', 'wpse337366_comment_form_modification');
function wpse337366_comment_form_modification($defaults)
{
    // put your condition here
    if( is_page('my-page') || is_singular('my_post_type') )
    {
        $defaults['title_reply'] = __('Leave a Review');
    }
    return $defaults;
}

You can place the code in a plugin or your theme’s functions.php.

The code will filter the default texts passed to the comment_form().

Reference

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