In the sigma template, I noticed that there was no line in the ad - 0 people viewed it. I need a line like this.

The issue was resolved independently!
If you want to see the view counter line. Add the code anywhere - oc-content/themes/sigma/item.php

<p class="view_number">
                            <?php _e('Viewed', 'sigma'); ?>:
                            <strong><?php echo ItemStats::newInstance()->getViews(osc_item_id()); ?></strong>
                        </p>

Unfortunately this line is not displayed, it shows the number. But I definitely needed a name and quantity. I gave an example on the screenshot.