When looking at my Schedule C deductions, it shows "$0" in the vehicle deductible section. How do I set it up to reflect the cost of fuel, parking, etc?

We can set up transactions to the correct expense category to accurately reflect them in the vehicle expense section, carpetdoctorny. Let me elaborate further on this matter.

When you create a new account or category for expenses, selecting a detail type categorizes it on your Income Tax page in QuickBooks and your Schedule C tax form.

For example, when you create a new expense, if you select Gas and fuel under Detail Type, the expense will appear under Gas and fuel on your Income Tax page in QuickBooks and will go on Line 9 on your Schedule C. 

Additionally, you can check out this article to learn where the detail types appear on your tax forms: Learn where QuickBooks Online detail types appear on your tax forms.

Moreover, you may find it helpful to check out one of our Help pages as your reference to guide you in managing tax forms, preparing taxes, and generating tax reports in QBO: Manage taxes in QuickBooks Online.

I am available if you need assistance with handling taxes. I am committed to helping you get back on track smoothly.