I have a iPhone 6 and I don't remember the 6 number pas-code on it so im wondering if someone knows how to get into it.

You will need to restore the device using a computer. The process will erase the device. Later you can restore your data from a recent back-up. Instructions here…

If you forgot your iPhone passcode - Apple Support

It is not possible to "get into" the phone if you have forgotten the passcode.

You have to erase / reset the phone and then set it up again. If you have a current backup, you can use that to restore the phone.

If you forgot your iPhone passcode - Apple Support