My son made his taxes for 2017 and needs a copy of his taxes for the school, how I found this information

That's common to end up with multiple accounts.  First LOG OUT of whatever TurboTax account you're logged into right now. Then use this TurboTax account recovery website to get a list of user ID's for an email address.  Run the tool against any email addresses you may have used

https://myturbotax.intuit.com/account-recovery/

Or you used the Desktop CD/Download program.  Then the only copies are on your computer.

I need the taxes for my son school ( fafsa ) he need a copy for his taxes 2017