If you filed you should be able to download and print a copy of your whole return. Are you sure you have a tax due? Did you pay the fees with a credit card? Maybe you set it up to pay by Direct Debit and not check?
How to review the method to pay the tax due
https://ttlc.intuit.com/community/tax-payments/help/how-do-i-review-the-method-i-chose-to-pay-my-fed...
How to get a copy after filing
https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-get-a-copy-of-a-return-i-filed-thi...
