Schedule D doesn't actually show the carryover amount. To find your  Capital Loss Carryover amount you need to look at your  return schedule D page 2.  Line 16 will be your total loss and line 21 should be a max loss of 3,000.  The difference between line 16 and 21 is the carryover loss.  

If you used the desktop version or have the complete pdf of your last year's return you might have the  Capital Loss CO (carryover) worksheet that will tell you the amount.

If you have investment sale losses, after you subtract the losses from your gains you can only deduct up to 3,000 per year. You can only deduct up to 3,000 (1,500 MFS) loss per year after any gains you have.  So if you have a lot of current gains you can use up the loss.  The rest you will have to carryover until it is used up.

If you transferred your prior return info it should already be filled in.

Enter a Capital Loss Carryover under
Personal
Personal Income
Choose Jump to Full List -or  I'll choose what I work on
Then scroll down to Investment Income
Capital Loss Carryovers - Click the Start or Update button