Hello,
Please answer this.
Which are the important do follow links?

In SEO, When Google bots are crawling a website they look for external links point to other websites. If this links is "do follow" then search engines will follows the link and so link juice gets passed.

Dofollow is a link attribute that instructs search engine robots to crawl the website link and index it in search engines. They links help to build backlinks for your website for search engine ranking, and also helps to drive good traffic to your website.