How many time can use same focus keyword in different different article or blog

how many time can use same focus keyword in different different article or blog. because Yoast SEO Analysis is indicating this message “You’ve used this focus keyword 2 times before, it’s probably a good idea to read this post on cornerstone content and improve your keyword strategy”. so anyone please help me out .

Hello @parwejrnc I understand your concern what you trying to say.
This happens because may be you already wrote an article in past with the same keyword. In Seo their is no restriction but better practice is that choose another keywords related to this because sometime same focus keywords articles makes the Google bot confused which one is most relevant and which one have more precedence than previous.

thanks @Siraj_Mahmood giving me to good information. Thanks a lot.