Are there any restrictions in relation to getting a Social Security number assigned for non-work purposes?
In this instance, you can not use it to work
What can I do if I need a number for tax purposes but am not authorized to work in the United States?
You can apply for an Individual Taxpayer Identification Number form the IRS. To get this number from the IRS, you can visit the IRS or call them on the toll free number 1-800-TAXFORM 1-800-829-3676 and request Form W-7 Application for IRS Individual Taxpayer Identification Number