Cwhere to put amt i paid on acct that matured 2017 and received 1099misc?

Why did you get a 1099Misc?  What box is the amount in?  A 1099Misc is usually for self employment income.

I assume this was Box 3 for a bond or investment that matured?  You would just skip the 1099-MISC part and enter it under investment income.  Your cost basis would be the amount you paid when you first bought the investment plus any interest on which you paid tax for accrued interest or an Original Issue Discount over the years.

Delete the 1099Misc you entered