I just open an account and it won’t let me upgrade. I need to add users.

Thanks for taking the time to reach out to the Community, @perfecttouchauto. It's great to hear you want to upgrade your QuickBooks Online (QBO) subscription, and I'm here to guide you on how.

Yes, you're right. If your QBO subscription is still in the trial version, you're unable to upgrade your account. You'll need to wait for the trial to expire, then pay the regular amount. 

To do that:

1. Sign in as a primary admin in your QBO account.
2. Go to the Gear icon and select Subscriptions and Billing.
3. In the QuickBooks Online section, click Upgrade your plan.
4. Select Choose Plan and follow the onscreen steps to continue.

Learn more by reading this article: Upgrade or downgrade your QuickBooks Online edition.

Once done, you can add users to your QBO account depending on your subscription level.

If you wish to update your billing details or view your billing history in QBO, please refer to this guide: Manage billing, payment, and subscription info in QuickBooks Online.

I'll keep an eye out if you have any follow-up concerns regarding your QBO subscription. It's always my priority to address your queries. Take care and have a great weekend!