Hello and Welcome to LinuxQuestions,
Please don't use words like 'urgent' in your thread title or in your text. We're all volunteers here on LQ and it's only urgent to you. Change your thread title into something more descriptive so that we instantly know what it's about.
In regards to your question, AFAIK the command useradd doesn't create a home directory if you don't provide the parameter -d or --home. So you just use the command without that parameter and the user will be created without a home directory.
For more detail you can always read the man page: