Hey newcomer! Let's work together and get this data imported into your QuickBooks Online.
All you need to do is go through your settings and import the information. Here's how:
Go to the Gear (Settings) icon in the top right-hand corner.
Under the "Tools" column, pick Import data.
Select the box of which these sales should be put in and follow the rest of the on-screen instructions.
If this doesn't work for you, then I suggest giving us some additional details so we can determine the best solution for your business. Here's a guide that can help out if need be: Common questions about importing data to QuickBooks Online.
Let me know if this helps. Hit the Reply button if you need me. Happy Friday!