For 2020, your tax liability is on line 24. If your withholding on line 25 was $10K and you still owed $1000 on line 37, then I would assume your liability was at least $11,000.
To assess your possible EV credit for 2021, you would need to know what your line 24 tax liability will be. Your child tax credit (line 19) will be higher than in 2020. The EV credit would be reported on line 20. Your credits on line 19 and 20 have to be more than your tax on line 16 and 17 in order to use the full EV credit.
