What is Trustrank?
The word TrustRank means "Ranking of Trust" in Turkish.
Trustrank is equivalent to the value of PageRank used in Google on Yahoo.
For example, the higher the trust value of a website, the more traffic it receives to your site. At the same time, your site is given the title of the site trusted by visitors or search engines. Your site will be marked as a reliable site.
TrustRank value should be kept as high as possible.
How to Icrease Trustrank Value?
I will explain how you can increase the TrustRank value of your site;
1- Make sure your site has an SSL certificate.
2- Make sure that the SEO settings of the site are in the most appropriate way. 
3- Having your domain name active for a long time increases the TrustRank value. If your domain name will remain active for at least 5-6 years, it will increase its TrustRank value more. 4- Make the link entry-exit from quality sites on your site. Every site you log in or out of link increases and affects TrustRank value.
5- Make sure that the content on your site is original. Try to support your articles with visuals. Cited content is a reason for your TrustRank value to drop.
