I live in Kansas and I believe I qualify for the K-26 tax credit which would be the biggest credit available to me. How do I file this with TurboTax?

If you qualify, you can claim the credit when you prepare your KS resident tax return.   On the Take a look at Kansas credits and taxes page, scroll down and click Start next to Other Credits and Credit Carryovers.  Answer YES and then enter the amount on the KS-26 line; it is the 4th item in the list.   

A tax credit for certain qualified aviation and aerospace employers for tuition or certain program-specific course fee reimbursements paid to a qualified employee, for compensation paid to qualified employees in each of the first five years of employment, and for individuals who become qualified employees of aviation or aerospace employers.

• A qualified employer is a sole proprietorship, general partnership, limited partnership, limited liability company, corporation, other legally recognized business entity or public entity whose principal business activity involves the aviation sector.
• A Qualified employee is any person newly employed on a full-time basis by or first contracting with a qualified employer on a full-time basis on or after January 1, 2022, who has been rewarded an undergraduate or graduate degree, or a technical degree or certificate from a qualified program by an institution.

The credit amount for a qualified employer:

• 10% of the compensation paid to a qualified employee in each of the first five years of employment, not to exceed $15,000 per year. This is a nonrefundable credit and cannot be claimed after the fifth year of employment.
• 50% of the tuition reimbursed to a qualified employee during the tax year. The credit shall not be refundable and cannot be carried forward.

The credit amount for a qualified employee:

A taxpayer who becomes a qualified employee during the taxable year shall be allowed a credit equal to $5,000. The credit may be claimed each year a taxpayer achieves the status of a qualified employee for the four taxable years succeeding the tax year in which the credit was first allowed.