Hello, @Ale,
1- Navigate to the Dashboard >> Static Blocks >> Add New and then create a block and add a product in it, if you want like I did, check the images for a better reference: https://postimg.cc/QKXNwwGb and https://postimg.cc/DJ0B6ymd and https://postimg.cc/r07C91BM once you have saved the block.
Now, You created a block with a product you want. It’s time to set this on the shop page let’s navigate to the Dashboard >> XSTORE >> Theme Options >> WooCommerce >> Shop >> Shop Page Layout and add the block shortcode there check images: https://postimg.cc/JyNGFbHR and https://postimg.cc/p9R2p3yt now we set the product on the shop page. Now, we need to show the categories on the shop page. Let’s come to the second point.
2- Simply navigate to the Dashboard >> XSTORE >> Theme Settings >> WooCommerce >> Product catalog then check the image: https://postimg.cc/QKFwNSbG and choose the show categories then check back to your site shop page after clearing the browser cache.
Regards 8Themes Team.