You need to go back you your 2019 Forms 8606 and make sure that each shows on line 1 all $6,000 of each one's nondeductible traditional IRA contributions made for 2019. If it does not, you must amend 2019. Then make sure that the amount on line 14 of each Form 8606 appears in 2020 TurboTax as the corresponding individual's basis in nondeductible traditional IRA contributions for years prior to 2020. The results on your 2020 IRA Information Worksheet suggest that you have made several errors in making these entries.
Finally, you must enter into 2020 TurboTax the contributions that each of you made for 2020.
