If you are referring to a tax year 2018 return, the TurboTax online editions have permanently closed. To complete a 2018 tax return that was started with the online editions see this TurboTax support FAQ for instructions - https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-finish-a-prior-year-return-that-i-...
If you are referring to a 2019 tax return, the TurboTax online editions should be available in early December.
If you purchased the TurboTax software to install on your computer for tax year 2019, either CD or Download, see this TurboTax support FAQ for the license code instructions - https://ttlc.intuit.com/community/tax-topics/help/i-can-t-find-my-license-code/00/852973
