Do follow links allow google (all search engines) to follow them and reach our website. Giving us link juice and a backlink.

No follow links attributes do not allow search engine bots to follow link.That means if the website owner is linking back to you with no follow attributes, it does not pass on link juice. Only Humans will be able to follow the links.
https://www.takshilalearning.com/landing-page/online-digital-marketing-course-in-hindi/