FWIW.
"The credit bureaus use sensitive information to keep track of your credit history. This information includes your Social Security number, your name, your date of birth, your address, and your employment history. While a Social Security number is an identifier that credit bureaus use to locate and collect your information, it’s only one of several identifiers. If you don’t have a Social Security number, credit bureaus can access your credit history using the other identifiers like your name, date of birth, address, and employment history.
While a Social Security number does improve the accuracy of matching credit history with a consumer, it isn’t necessarily required to create a credit report and an accompanying credit score."
https://www.novacredit.com/resources/how-to-get-a-credit-score-without-a-social-security-number
