How long does it take an SEO company to rank a website in USA?

For ranking a website, the SEO company in USA takes a general time of 3-6 months. It totally depends on the website, like which type of content it is considering, the age of the website (like a new website takes more time to rank), the keyword of that website, and many more things it considers to rank a website. In this duration, the website will rank in the USA.