How do I by-pass putting in a passcode?

If you have forgotten your passcode, you don't bypass it. It wouldn't be a very good theft deterrent system if you could bypass it.

See this link if you have forgotten your passcode --> If you forgot the passcode on your iPhone, or your iPhone is disabled - Apple Support

If you’ve chosen the option to use a screen lock passcode, you cannot bypass that (it would be a pointless option if you could do so). All you can do is erase the device by restoring in iTunes to reset that passcode -> If you forgot the passcode on your iPhone, or your iPhone is disabled - Apple Support

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