How can I see the actual completed Tax forms and schedules before I file?

With the exception of your main Form 1040, you cannot. Please allow us to explain that in detail.

In TurboTax online, the only actual tax form that you can preview before paying / filing is the primary Form 1040 itself.  This is different than in TurboTax desktop, where you can view any form at any time.  The reason for this, unfortunately, is to prevent a certain few users from having TurboTax create their complete tax returns, and then copying down all those numbers onto blank IRS tax forms, thus circumventing the payment process.  If everyone did that all of the time, the company would have no revenue, as a business we could not pay our employees, and as consequence there would be no TurboTax software.  We do apologize for the inconvenience that creates for all of our honest online customers; but we hope you can see the need for this blanket policy.

We also realize that this policy may fly in the face of common sense especially where the TurboTax Free Federal edition is concerned.  In response to that, all that we can tell you is this is a blanket policy across all of the TurboTax online versions (including Free).  Even if you were to upgrade to the most expense online version of the product, the ability to preview forms other than the 1040 is not available.  It only exists in the TurboTax desktop line of software (where your buy the program and install it on your personal computer).

https://ttlc.intuit.com/questions/1901539-how-do-i-preview-my-turbotax-online-return-before-filing

Most of the tax information that the majority of individuals want can be seen from there.  For example, to check that the total of your W-2 wages is correct and being reported to the IRS properly, you would open up the 1040 (or 1040A or 1040EZ) and look to the appropriate line on the tax return.  The same would be true of taxable interest (reported to the government on a Schedule B).  In other words, the existence of other underlying tax forms and schedules can be inferred by the evidence that they transfer onto the 1040.  Even without seeing them, you'll know by that method that they are there.  In fact, in customer service support, when taking phone calls from our TurboTax online customers, we often find the "preview 1040) feature invaluable to helping resolve a multitude of questions and issues.