For creating bills which account do I have to select from category drop down menu?

Hello, 9130350589965216. 

Thank you for reaching out to the Community. Entering bills in QuickBooks Online allows you to track upcoming payments as well as provides up-to-date expense figures. It is also helpful to know the total amount of bills, or accounts payable (A/P), that your company owes. 

Regarding your concern about which account to be select in categorizing, I recommend consulting an accountant first to align the business setup. This is to ensure that everything is accurate and the reporting of your book is moving well.  

Please check these articles for more information if you're billing this expense to a specific customer: 

• Enter, Edit, or Delete Expenses in QuickBooks Online 
• Enter bills and record bill payments in QuickBooks Online 

To track the total expenses entered in QuickBooks, you'll want to run an expense report to show the total amount: Run Reports.  

You can always tag my name in the comment section below if you need further assistance with QuickBooks. I'd be happy to help. Take care and have a wonderful day.