Taxi cost Tax write-offs

I am just curious as to how this factors in, I've spent a lot of money on taxis or I should say Uber and lyft and I want to know if I can write them off, I have seen a section where it mentions tax write offs of course and then the tab where it says taxi, after entering in an amount, nothing changes, does this not count towards my refund? did I enter in the information incorrectly? Forgive my ignorance!!!