I cannot find the home office deduction on my version of turbo tax

It is in the self-employment/business section of TurboTax.   Where do I enter my self-employment business expenses, like supplies, home office, and  vehicle mileage?

No one can call you from this forum.

If you are using desktop download software every version has all the forms and all of the schedules.   You need to prepare a Schedule C for your business expenses if you are self-employed and have a home office.

If you are using online software you will need Premium software to prepare a Schedule C.

If you are a W-2 employee:

W-2 employees cannot deduct job-related expenses on a federal return.  Job-related expenses were eliminated as a federal deduction for W-2 employees by the tax laws that changed for 2018 and beyond.  Your state tax laws might be different in AL, AR, CA, HI, MN, NY or PA.

If you live in a state that lets you deduct job-related expenses, the information will flow from your federal return  to the state return, so enter it in Federal>Deductions and Credits>Employment Expenses>Job-Related Expenses