Hi there, cuelloboy18-hotm.
I’d like to take the time to hear your concerns about setting up your business address. Could you tell me a little bit more about what's going on? This is to check if we have a reported issue and ensures a timely solution to fix it.
In addition to @Fiat Lux – ASIA answer, may I know what region did you choose when signing up for QuickBooks Online (QBO)? Are you trying to set up the business address in your Company settings? What specific error code or message did you encounter?
I look forward to hearing back from you, @cuelloboy18-hotm. Have a good one.