I need to delete an amount on Schedule C line 44 that was entered in error. Where do I do this?

Line 44, Schedule C is showing the miles driven with your vehicle, business miles, commuting miles and other miles (personal). You can take only the business miles if using the standard mileage rate. Also the business miles are used against total miles to determine the amount is you are using actual expenses for the year (depreciation and operating expenses x business use percentage. 

• Search (upper right) > type schedule c > Click the Jump to... link > select Edit or Review beside the business > select  'Vehicle' and review your entries 

The 2022 rate for business use of a vehicle is?

• 58.5 cents a mile from January 1, 2022 to June 30, 2022, and 
• 62.5 cents a mile from July 1, 2022 to December 31, 2022.

See the image below.