I signed up and I put my country to the UK but everything is in dollars and there is no way to change it

Your input won't go unnoticed, Rainbowmuttpetcare23. I know a possible reason why changing your account's currency to your desired one is unavailable. I'll outline the details below.

Account currencies are automatically determined by the specific regional website you used when you purchased your QuickBooks Online (QBO) account. You may have signed up via the US-specific link and created a QBO US account, which makes the option to switch currencies unavailable.

We can fix this by canceling your current account and signing up for a new one with your desired currency. You can visit this resource to initiate the process: Sign up for QBO United Kingdom (UK).

Alternatively, you can use the multicurrency feature in QBO to record transactions in foreign currencies without changing subscriptions. It will enable you to manage international transactions seamlessly while keeping your existing data and account configuration entire. 

Here's how:

1. Navigate to the Gear icon and proceed to Account and Settings.
2. Go to the Advanced tab and then Currency.
3. Select Edit.
4. From the Home Currency dropdown, choose your preferred currency.
5. Turn on the Multicurrency feature by toggling the switch on. Please note that this action is irreversible.
6. Hit Save, then Done.

Additionally, you can review this resource for more information about this feature: Setting up Multicurrency in QBO.

I'm always ready to assist you again with any questions or concerns as you go through these processes. Please reach out for further clarification about changing your QBO account's currency. Have a great day ahead, Rainbowmuttpetcare23.