According to Google, there is no harm to giving many links or little links. But, best practice is given 2 to 3 links in every 100 to 150 words. Then this depends on the content. Link is valuable to search engines. So, it is important to understand how Google and other search engines use how to link. To determine how important a webpage is, use the number of proposed links on the webpage. Not only can external links help a page rank in Google, but internal links also help. Ask Yoast or Joost tells you how much links should be per page and which one should be.
How many internal links do I need on each page of content?
Oct 05, 2018 By IMMWIT PVT LTD