To create someone's account in Engpsh, you can say "create an account for someone" or "set up an account for someone."
The phrase "create an account" refers to the process of creating a new account or profile with a company, website, or other service. "Set up an account" has a similar meaning and can be used in the same way.
Here are some example sentences using these phrases:
"Can you create an account for me on this website?" (你能帮我在这个网站上创建一个账户吗？)
"I need to set up an account for my new employee." (我需要为我的新员工创建一个账户。)
"We can create an account for you in just a few minutes." (我们可以在几分钟内为您创建一个账户。)