If you recently have purchased Bitcoin from a National Bitcoin ATM and clicked on the option "create new wallet" you should have 2 receipts which were printed out.
The first receipt looks like the picture below and has 2 QR codes on it. DO NOT THROW THIS RECEIPT AWAY. This receipt is called a 'paper wallet' and has your Bitcoin stored on it. If this receipt gets lost before you import the Bitcoin into a digital wallet you will risk losing your Bitcoin forever.
You can learn more about what a paper wallet is and how to import your bitcoin into a digital wallet at the following help pages:
The second receipt which is pictured below is your transaction receipt. This just contains information about your transaction at the machine. Much like when you get a receipt from a normal ATM machine. If you ever have any issues using a National Bitcoin ATM our support staff will want you to provide information from this receipt. So it's always a good idea to hang on to this as well.