OK, look...you don't get it handed to you...you get to deduct it from your gross income.
Tax Tip 2019-57, May 10, 2019
www.irs.gov
If you drive enough miles go be able to deduct $50,000 from your gross income, they you'll also benefit by paying less in taxes on that income...
Keep in mind that as a small businessman, (IIRC) you'll need to itemize your deductions instead of taking the standard deductions to be able to take your mileage. If you don't have enough to offset the standard deduction with, as an example, mortgage interest and taxes, etc, then by itemizing for the mileage, you'll gain the deduction for mileage...but lose the standard deduction amount...which is fairly significant.