I just cant get pass my iphone 5 passcode what am i gonna do ?

If you have a passcode to the screen lock that you've forgotten, restore the device from the computer to which the device is synced. For information and instructions, see:

http://support.apple.com/kb/ht1212

If that will not work, you'll need to put the device into Recovery Mode and then try the Restore again:

http://support.apple.com/kb/ht1808

If that still doesn't work, as a last resort try DFU mode:

http://www.iclarified.com/entry/index.php?enid=1034

If your device is running iOS 7 and you set up Find My iPhone (iPad/iPod), however, then it has the Activation Lock on it and you'll need to enter in your Apple ID and password to activate the device after restoring:

http://support.apple.com/kb/HT5818

Regards.

Forum Tip: Since you're new here, you've probably not discovered the Search feature available on every Communities page, but next time, it might save you time (and everyone else from having to answer the same question multiple times) if you search a couple of ways for a topic, both in the relevant forums and in the Apple Knowledge Base, before you post a question.

remember the passcode

Read the support articles to which I linked.