If your spouse does not have a social security number or Individual Taxpayer Identification Number (ITIN) you cannot e-file the tax return.
You will need to wait for your spouse to receive a social security number, if eligible, and enter it or follow the instructions above from @Opus 17 to print, sign and mail your return along with a form W7 requesting an ITIN for your spouse.
There are other options available Here as well.
[edited 2/17/2021 4:16pm EST]
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