According to Google, EAT is not a real thing that exists in the world. EAT is comprises of various algorithms, baby algorithms made in the Google core algorithm.
Meaning of EAT:
EAT refers to expertise, authority, and trustworthiness. Each alone word has various algorithms present to determine various indicators of measuring the authenticity of the site. It may indicate in many ways such as Pagerank, the content accuracy and many more.
Google Statement:
Garry Illyes stated that SEO might be in confusion state. There is not any EAT score. There is not a single EAT score. All this might create great confusion but EAT is a mixture of various algorithms.
Tweets After Garry Illyes Statement:
“EAT and YMYL are concepts introduced for Quality Raters to dumb down algorithm concepts. They are not ‘scores’ used by Google internally.“ #Pubcon @methode Followup: There is no EAT algorithm.
— Grant Simmons (@simmonet) October 10, 2019
#GaryAMA
Q. Is there an EAT Score for your website?YMYL or EAT are CONCEPTS there are NO SCORES applied to your site. #Pubcon @jenstar
— Kristine Schachinger (@schachin) October 10, 2019
"We don't have a YMYL algorithm, nor an EAT algorithm" – @methode #pubcon
— Simon Heseltine (@SimonHeseltine) October 10, 2019
3002 
