It depends.
Employees can no longer deduct work-related mileage in tax years 2018 through 2025 due to the Tax Cuts and Jobs Act (TCJA) that Congress signed into law on December 22, 2017. Prior to the tax law change, employees could deduct mileage for commuting between multiple job sites during the same day, as well as commutes to temporary work locations and off-site business meetings.
However, if you are self-employed, you would enter the expenses on your Schedule C.
To enter your home office, vehicle mileage, supplies, and other common business expenses:
If you use TurboTax CD/Download Home Business follow these instructions to enter your expenses.
You are posting from the Free Edition. That version does not support any sort of itemized deductions or preparation of a schedule C. Were you a W-2 employee in 2020 or did you have self-employment income as a delivery driver, rideshare driver, or some other sort of independent contract work?