Hi @Saeid Rajabzadeh,
You should sign in the Microsoft account dashboard to download the Office product.
I suggest you refer to this support article to get more information:
[https://support.microsoft.com/en-us/office/download-and-install-or-reinstall-office-2019-office-2016-or-office-2013-7c695b06-6d1a-4917-809c-98ce43f86479
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