I am a Lyft driver and I have free turbo tax offer in my account but I fill the forms and end of that ,turbo tax asking to pay

Hi, The free offer applies to TurboTax Self-Employed federal, or 50% off TurboTax Live Self-Employed federal.   Please ensure you're logging into your Lyft driver dashboard first, then click on Tax Information, then click on the TurboTax offer.  You'll be taken to a microsite just for Lyft drivers.  Login from there and you'll see your discount applied in checkout.  

https://ttlc.intuit.com/questions/4237789-why-isn-t-my-lyft-discount-being-applied-to-my-turbotax-account