Yes, you can, Baze0719.

In QuickBooks Online, you can have more than one account with the same login credentials. Each account you create requires an additional subscription. For each QBO account, you can have as many companies as you'd like.
 

Here are the steps to add a new company:

1. Go to this link and choose your country: https://quickbooks.intuit.com/choose-country/.
2. Select Buy now or Free 30-day trial.
3. Select again from the same buttons under the subscription you want to avail.
4. On the Sign-up page, click the Add another company hyperlink.
5. Enter the login credentials you always use and select Add new company.
6. From there, you can start setting up the new company.

Once you log in to your QuickBooks Online account, you'll see the two companies and switch between them.

You can get back to this thread if you need more help managing your account. The Community is here to help.