I drove for Uber Eats, making food and grocery deliveries. What category of employment would I check? I have Form 1099-K

That is self employment income and you file it on schedule C in your personal tax return.

You can enter Self Employment Income into Online Deluxe but if you have any expenses you will have to upgrade to Premium version. Or use any of the Desktop CD/Download programs.

You can buy the Desktop CD or the Download program here,
https://turbotax.intuit.com/personal-taxes/cd-download

How to enter income from Self Employment
https://ttlc.intuit.com/community/self-employed/help/how-do-i-report-income-from-self-employment/00/26653

Where to enter business expenses
https://ttlc.intuit.com/community/entering-importing/help/where-do-i-enter-my-self-employment-business-expenses-like-home-office-vehicle-mileage-and-supplies/01/27109

Here's some links about Uber

Tax Tips for Uber, Lyft, Sidecar and other Car Sharing Drivers FAQ
https://turbotax.intuit.com/tax-tips/self-employment-taxes/tax-tips-for-uber-lyft-sidecar-and-other-car-sharing-drivers/L3IulMEzp

What do I need from Uber?
https://ttlc.intuit.com/community/uber-or-lyft/help/what-do-i-need-from-uber-to-file-my-taxes/00/27107

How to get the Uber Discount
https://ttlc.intuit.com/community/charges-and-fees/help/how-can-i-apply-my-uber-discount-to-my-turbotax-account/00/27505

How to import from Uber
https://ttlc.intuit.com/community/entering-importing/help/how-do-i-import-my-income-information-from-uber/00/27151

Where to enter Uber/Lyft Income
https://ttlc.intuit.com/community/uber-or-lyft/help/where-do-i-enter-my-lyft-uber-income/00/26804