Bitly accounts have no QR ability – mental – must be a paid version or a royalty thing. Anyways – type this in to any browser and you instantly can download a QR code png. First change the last part to your own short code. Instructions are here for other options.
BUT – that can’t be read from an iOS device camera taking a pic or clicking on a web page. So here is a text version so you can copy it easier:
https://chart.googleapis.com/chart?cht=qr&chs=300×300&chl=https://myShortCode.com/12345