Meta tags are used by search engines to help index your web page to provide relevant search results when someone searches the web.
The meta title and meta description tags are important that help optimize your website’s pages for better search engine rankings. The tags are also displayed as part of the search snippet in a search results page (SERP) and it gives an idea of the content that exists within the page related to the search query.
Ideal title length should be around 60 characters. Although title tags and meta descriptions don't count as a ranking factor, CTR (Click thru rate) is. Optimizing your title can increase your ranking which can impact the ranking.