Based on your 2020 tax info, TurboTax uses the following IRS approved methods to calculate your estimated tax payments.

• 90% of your estimated 2021 taxes
• 100% (110%) of your actual 2020 taxes

See also this TurboTax Help 

Payment vouchers are also available in the TurboTax Print Center with the pages of your tax returns, schedules and worksheets.

• Down the left side of the screen, click on Tax Tools.
• Click on Print Center.
• Click on O2020 Federal return and Include government and TurboTax worksheets.
• Click View or print forms.

Take me to the place where I make my 2021 estimated tax forms

"Take me to the place where I make my 2021 estimated tax forms" - I am not sure what you mean. If TurboTax, having just done your 2020 tax return, judges that you likely need to make estimated tax payments, it will add four 1040-ES forms to your output forms, one for each "quarter".

You can attach a check to each one and mail it by the due date.

Or, and this may be easier, go to this IRS webpage and click on one of the two choices under "Pay Your Taxes Now", so pay the estimated taxes each quarter.

If this is not what you meant, come back and ask your question again.