All financial institutions and credit card companies have their own processes in place for approving requests for name changes on the credit card. You should reach out to your credit card issuer and find out the documents required and the process to follow to change your name on the credit card.
Legally speaking, when you change your name on the credit card, it will not affect your credit score. Once your name has been updated on the credit card, your name will be updated on your credit report as well.
A few credit card companies might accept digital scans of the documents, and a few may need the physical forms.
Yes, you can submit your passport as a document for proof of identity.
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