We appreciate your prompt reply and for updating us on the status of your issue about changing the billable rate per hour, @rbtservices, as well as for specifying your concern about why you were suddenly added as an employee without setting it up. I am here to share some information to clear things up and resolve your confusion.
 
With regard to your name showing as an employee, you can still add a worker even if you do not have payroll set up enable. You might have accidentally entered your details and saved them when you created the Weekly Timesheet. This scenario happens when you click the + Add new icon in the upper left corner from the Name dropdown. 
 
Since you mentioned that it's just you in your account, tapping the + Add new and entering your name will automatically place your profile as an employee. You can see the example screenshot below:

You can, however, change the status of your employee profile to Inactive in the Payroll tab. Here's how:

1. In the left panel, select the Payroll tab.
2. You will be routed to the Employees section. Click your profile.
   
3. Tap the Actions dropdown and choose Change status.
   
4. From the Status section, select Inactive.
   
5. Once done, tap the Save icon below.

To answer your question about why the $65 is like a default amount when you enter your timesheet, please know that QuickBooks will remember the last details you enter in the Weekly Timesheet section. Even if you turn off the automation of Pre-fill forms with previously entered content in the Account and Settings tab, it will not change how this part works.

It is also correct that you can manually change the billable rate every time you enter timesheet information. However, if you wish to place a default number, you have the option to keep your profile active in the Payroll section and follow the steps my colleague @Nicole_N provided to set up the amount. 

Encoding the correct timesheet details is essential to calculate your working hours accurately to release a correct amount of money. Let us know if you have additional questions by leaving a comment below.