DNSSEC stands for Domain Name System Security Extensions. DNSSEC helps secure certain kinds of information provided by the Domain Name System. The DNS System is the used when someone types in a domain name or an email is sent, for example. It essentially encrypts the data as it passes over the internet. To enable DNSSEC on a domain name, you need to talk to your domain name registrar.
Certain domain name registrars will let you enable DNSSEC via your registrar's dashboard or some will enable it for you if you contact them via a support request.
DNProtect believes it is important to set up DNSSEC on domain names to protect them from future risk. Domain names that do not have DNSSEC enabled may receive negative points in their scores. For more information, see the ICANN website about DNSSEC https://www.icann.org/resources/pages/dnssec-what-is-it-why-important-2019-03-05-en