Hello community, How may I get a copy of my 2019 online tax payment?

Get the proof of payment from the credit card company.

Thank you so much Dan. 
I already got it but I was hoping to get the copy from Turbotax with a confirmation number. 

Sign into TurboTax using the same logonid that you files taxes with.

Find Add a State near bottom of page and click that button

Click Tax Tools

Click Print Center

Print your federal return with all government and TurboTax forms checked.

Your payment information will be on the first page of the pdf.