How many time will stay data on account?

Hi! 

I'm Sergey from the Youtrack team. 

Thank you for the post. I'm happy to help you.

I believe that you refer to Youtrack inCloud instances, as Standalone users can store their data as long as they wish. For that, please check our documentation that covers this: https://www.jetbrains.com/help/youtrack/incloud/Instance-Cancellation.html#automatic-deletion