Thanks for posting in the Community, @UPC123. I'm here to lend a hand with crafting a budget in QuickBooks Online (QBO).
The Actual column in the Budget vs. Actuals report will update to reflect transactions when they're added for the category. I'm including an article that provides further insight into budgeting, such as how to edit one: How to create, edit, and manage budgets.
Additionally, since you've referenced that you recently started with QBO, I wanted to take a quick moment to include a resource designed to help a user become acclimated with the software: QuickBooks Tutorials.
I'm confident that this will get you pointed in the right direction.
The Community has your back, so please don't hesitate to reach out should you ever need anything. Wishing you a safe and fun weekend ahead.
