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https://turbotax.community.intuit.ca/community/turbotax-support/help/03/en-cahttps://turbotax.intuit.ca/tax-software/index.jsp
This question is in the correct forum.
First, in the US tax system, your spouse is never your "dependent" for purposes of taxation. However, to be able to add your spouse to your US tax return, you will need to get an ITIN for your spouse, a tax number that is used by the IRS for individuals who cannot get an SS number.
Please see this IRS page "Individual taxpayer identification number (ITIN)" for more information about the ITIN.