Yes, if you're unable to access TikTok or other social networks while you're at school or work due to a firewall, a VPN can help you bypass the block. By masking your online activity, VPNs can trick firewalls so that they can't see or block the sites you're using. Additionally, VPNs have security features that prevent your network administrator from detecting that you're bypassing the firewall so that you won't get caught by your boss or teachers.