Glad to have you here in the Community, @gamal-corra-scot.
Let me share some information on how budgets work in QuickBooks Online (QBO).
Budgets won't affect the Profit and Loss report since it isn't an actual cost. However, you can use your previous Profit and Loss report to create a budget in QBO.
On the other hand, may I know if you're using a third-party app that can upload budgets into QBO? Please know that there isn't a way to upload budgets in QBO UK.
You may want to check out this article to learn how to manage budgets in QBO: Create budgets in QuickBooks Online.
If you have follow-up questions about budgets or you have other concerns with QuickBooks, don't hesitate to leave a comment below. We're always here to assist you.