I am trying to enter an invoice. I enter new then bills and then it does not show me Vendor with a new transaction screen?

Welcome to the Community space, Lisa. I'm happy to share some information about bills and what data shows up on your Bill screen.

First off, the data or transactions that will show up on your Bill page are your Purchase Order (PO) under the vendor that you can choose to add to the bill. Since no data shows up on the left corner of your screen when trying to create a bill, it's because you don't have a PO transaction under that vendor.

Also, please note that the Purchase order feature is only available in QuickBooks Online Plus and Advance subscriptions. If you're currently using Simple Start or Essential, you can upgrade your subscription to use the said feature.

In the meantime, you can manually enter your bills under a customer accordingly. You can follow the steps I've provided below for proper guidance.

1. On the + New icon, select Bill.
2. From the Vendor ▼ dropdown, choose a vendor.
3. On the Terms ▼ dropdown, choose the bill's terms. It is the period that your vendor expects you to pay them.
4. Enter the Bill date, Due date, and Bill no. accurately.
5. Enter the bill details in the Category details section. 
6. From the CATEGORY ▼ dropdown, choose the expense account you use to track expense transactions. Then, fill out the rest of the form accordingly.
7. Enter the Amount and tax.
8.  If you plan to bill a customer for the expense, select the Billable checkbox and enter their name in the Customer field. If not, you can leave it blank.
9. Once done, hit Save and close.

In addition, you can pay your vendors by using QuickBooks Bill Pay. It helps you combine bill payments with your accounting process, so your bill data moves seamlessly within QuickBooks.

Don't hesitate to reply to this thread if you have additional bills-related queries in QuickBooks. We'll be delighted to help. Have a great day!