how do i reset forgotten security questions for iCloud

You need to ask Apple to reset your security questions. To do this, clickhereand pick a method; if that page doesn't list one for your country or you're unable to call, fill out and submitthis form.

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Use this: If you forgot the answers to your Apple ID security questions - Apple Support

If you are still stuck contact Apple: Contact Apple for help with Apple ID account security - Apple Support