We appreciate you getting back here in the thread, Eleazar.
Before anything else, we'd like to take this opportunity to thank you for getting back here in the thread and for allowing us to help you with your query. In QuickBooks Online (QBO), you can create budget by class, but doing it by location isn't possible.
A workaround to get you through this is to ensure class and location are enabled or turned on inside the company file. You can also upload it through a CSV file if the spreadsheet sync doesn't work. If you wish to proceed with uploading the CSV file, we'll gladly write the steps below.
You'll want to download a budget template. These are the steps:
For more details, see Upload a budget using a .csv file section inside this article: Create budgets in QuickBooks Online.
Moreover, we've got these articles to help you learn more about what data you can get into your company, modify your business report and keep their settings for future use inside QBO:
The Community team is always ready to get back to you if you need further assistance with this or have a task you'd like to accomplish inside the program. Please don't hesitate to visit us anytime. We've got you covered. Take care, and have a nice day!