I need to change my apple id. I forgot my pass word and the answers to my security questions

You need to contact Apple's Account Security team. 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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Go here. Select your region, and then tap on Get support.

Contact Apple for help with Apple ID account security - Apple Support

Did you synced with ITunes? You would have to restored your device. Here is a helpful link from apply support: If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled - Apple Support