Does turbidtax keep track of capital loss carryover to apply to tax return the next year ?

Usually, TurboTax will keep track of the capital loss carryover but it is always recommended to keep track of it yourself as well. 

Please see this FAQ for additional information:

https://ttlc.intuit.com/replies/3301508

Also, once you have filed your return you might want to save/print the tax return including all the worksheets for your records:

Please log back in your TurboTax account and "add a state" to open the return back up (you are not really adding a state, just to open it back up), then select Tools on the left, Print Center and choose the print center, then select returns and choose to print just the tax return or to include all worksheets as well.