Whether a website and any given page on it is listed in a viably high spot on a relevant SERP on Google is partially dependent on whether there is a healthy selection of links pointing to it from across the Internet. These are called backlinks to differentiate them from internal links that exist to form navigational connections between pages on the site itself. So long as Google's algorithms do not deem various backlinks to have been surreptitiously placed there by the website's owner, backlinks are seen as a reflection of the website's worth as a resource on its subject matter because they strongly indicate that other websites are talking positively about it.
However, backlinks have differing degrees of relevance when they point to either a website's home page or a specific page on that site. Logically, when an external website hosts a backlink pointing to the home page of another, that site is conveying to its audience that the other website is generally worthwhile to look up and read multiple pages of. This is because websites' home pages are generally meant to simplify the process of reaching desired pages within their domains. Any backlink on a blog or forum post that directs its audience to a specific page within a site, on the other hand, clearly exists because the external page is considered to be immediately relevant.
There is no advantage in it for a website to try to make a greater fraction of its total accrued backlinks point either to its home page or to its more specific content pages. Backlinks for both segments of the website's overall structure are equally helpful to the site's chances for higher SERP positions because Google values how Internet users regularly bring attention to websites both for what they are and for individual pages within them. It is generally more likely, however, that backlinks pointing to the website's home page will occur on social media pages representing it and directories that list websites in general. Backlinks to individual pages are more likely to occur as a result of those pages focusing on keywords. For more information click here https://www.reddit.com/r/SEO/comments/bqfzwz/valueofbacklinkstohomepagevscontentpages/.