It seems that you have to download your mileage report from stride and manually enter it into Turbotax.

Once you have determined your business mileage for the year, simply multiply that figure by the Standard Mileage rate. For tax year 2020, the Standard Mileage rate is 57.5 cents/mile.

How to Log Mileage for Taxes in 8 Easy Steps

1. Make Sure You Qualify for Mileage Deduction. 
2. Determine Your Method of Calculation. 
3. Record Your Odometer at Start of Tax Year. 
4. Maintain Driving Log (If Needed) 
5. Maintain Record of Receipts (If Needed) 
6. Record Odometer at End of Tax Year. 
7. Record Mileage On Tax Return. 
8. Retain the Documentation.

I have the stride report my husband got from DoorDash, but where do I actually go in TurboTax Deluxe to enter the information to get the deduction? Thanks!

Are you using the desktop version?  If so, you will need to enter the Door Dash income and mileage directly on Schedule C.

If you are using the online version, you will need to upgrade to TurboTax Self-Employed then select the following:

• Federal
• Income and Expenses
• Show More next to Self-Employment
• Start or Revisit next to Self-Employment
• Yes, to you have any self-employment income or expenses
• Enter the type of self-employment work you do
• Click through a few more screens and you will get to a screen that says "Your XX info"
• Click Looks good
• Then you will come to a screen that says Let's enter the income for your business.  It will give you the option of 1099-NEC or Other self-employed income including the 1099K , cash and checks.  Select the one that applies to you and hit continue
• If you do not select one, it will not let you enter your income
• Enter your self-employment income on the next screen
• Then continue through and select add expenses, TurboTax will already recommend vehicle expenses when you enter Door Dash as your business type.