When the forms and schedules for your tax return have all been finalized the option for the Refund Processing Service will be available along with the $39.99 fee for the service.
Click on Review and there will be a list of forms and schedules with the dates they will be available.
See this TurboTax support FAQ for IRS forms availability - https://ttlc.intuit.com/questions/1908854-irs-forms-availability-table-for-turbotax-individual-perso...
The IRS will not be accepting any type of 2017 tax return until January 29, 2018
The IRS will hold all 2017 tax returns that have a tax refund which includes EIC and/or the Additional Child Tax Credit util mid-February. They will release the tax refunds in late February if there are no errors on the tax return.
