I need to find the supplemental depreciation schedule that fills in line 18 of the schedule E

[JotikaT2]

Please see the following links to search for your depreciation report as it will depend upon the version of the software you are using.  

How do I preview my TurboTax Online return before filing?

How do I preview my return in the TurboTax Desktop software?

Once you are in the applicable form section, you will need to search for Depr Report under the applicable Schedule E Wks.  See the screenshot below for an example of where you'll need to look to locate the actual depreciation report for your applicable Schedule E.