More about shielding in the following Youtube video.
It’s rare to actually need shielded Ethernet cable in a residential setting. Many DIY installers (homeowers) have the impression that shielded Ethernet is “better.” After all, wouldn’t shielded be somehow better than unshielded Ethernet?
Well, oftentimes, the answer is “no.” Shielded Ethernet does not make your cable faster. The shielding is designed to mitigate EMI/RFI interference or potential ESD discharges that you know you need to avoid.
Even for typical businesses where proper shielding can be done, usually you do not need CAT7 or CAT8 either. You may use shielded CAT6A instead.