Hello there, @Dee64.
Good to see you here in the QuickBooks Community. Allow me to share some insights about the Profit and loss report in QuickBooks Self-employed.
A profit and loss report summarizes income (the money you earned) and expenses (the money you spent), so you can see how profitable you are. Also called P&L or an "income statement."
I recommend you check the categorization for each transaction in your bank. Also, before running a Profit and Loss report make sure to review the transactions date range.
Here are some articles where you can get additional information about handling transactions in QuickBooks Self-Employed;
Let me know if you have other questions. I'm always around to help. Keep safe always.