Trying to find a copy of my tax extension. Its say to just log in and there will be a link for the 4648 but I don see it anywhere.

[SweetieJean]

Many people have multiple TT accounts and forget how to access them.  Log out of the account you are in now.
Account recovery
https://myturbotax.intuit.com/account-recovery/
https://ttlc.intuit.com/questions/1901535-forgot-your-turbotax-user-id-or-password
Or did you use the desktop version of TurboTax?  If so, the files are on your own hard drive or any backup device you used like a flash drive.

https://ttlc.intuit.com/questions/1901486-how-many-turbotax-accounts-do-i-have
https://ttlc.intuit.com/questions/1901535