How do I find out what my return amount was last year?

Sehttps://ttlc.intuit.com/community/prior-year-return/help/how-do-i-access-my-prior-year-return/01/27010e  this   

You will need to access the same account that you used last year with the User ID and password that you created in order to access your past return.

Please click the TurboTax Help link, listed below. to learn more. 

https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-access-my-prior-year-return/01/27010