Check this link below.... Estimated tax payments are usually required for self employed to pay tax as you go. If you are not self employed (and get a W2), TurboTax automatically sends these with the Filing Instructions for the following year if it looks like you might not be withholding enough, so you won't face an underpayment penalty.
https://ttlc.intuit.com/community/tax-payments/help/why-did-1040-es-estimated-tax-vouchers-print-out...
