TurboTax will automatically give you the Standard Deduction if you don't enter enough deductions to itemize. You don't have to do anything, just continue past the deductions and credits. But keep in mind, you may be able to save money on your taxes if you have expenses greater than $12,700 for a joint return.
The only exceptions to automatically claiming the Standard Deduction would be if you were Married, Filing Separately and your spouse itemized, or if you were claimed as a dependent on someone else's return.