Based on Sagarin's ratings following Yesterday's (12/19/20) games. A team probably need to finish better than #40, possibly better than #35 for an NCAA bid given the auto-bid leagues and W vs L records lowered by playing in a very tough conference. If these rankings persisted to season's end the ACC would be potentially a 6-7 -bid league and the Big 10 potentially a 9-10 bid league.
https://www.usatoday.com/sports/ncaab/sagarin/2021/conference/
ACC Standings
12 Virginia = 89.01
20 Florida State = 86.51
24 Louisville = 86.04
25 North Carolina = 85.97
28 Syracuse = 85.66
30 Clemson = 85.57
36 Duke = 84.99
40 NC State = 84.37
45 Virginia Tech = 83.85
63 Georgia Tech = 80.82
67 Pittsburgh = 80.27
91 Miami-Florida = 77.66
101 Notre Dame = 77.01
108 Wake Forest = 76.26
143 Boston College = 73.90
Big 10 Standings
3 Iowa = 91.13
6 Wisconsin = 90.15
7 Illinois = 89.98
11 Michigan = 89.08
15 Rutgers = 86.93
16 Michigan State = 86.91
23 Indiana = 86.20
32 Ohio State = 85.12
35 Purdue = 84.99
38 Penn State = 84.96
42 Maryland = 84.26
58 Minnesota = 81.80
69 Northwestern = 79.76
105 Nebraska = 76.52
https://www.usatoday.com/sports/ncaab/sagarin/2021/conference/
ACC Standings
12 Virginia = 89.01
20 Florida State = 86.51
24 Louisville = 86.04
25 North Carolina = 85.97
28 Syracuse = 85.66
30 Clemson = 85.57
36 Duke = 84.99
40 NC State = 84.37
45 Virginia Tech = 83.85
63 Georgia Tech = 80.82
67 Pittsburgh = 80.27
91 Miami-Florida = 77.66
101 Notre Dame = 77.01
108 Wake Forest = 76.26
143 Boston College = 73.90
Big 10 Standings
3 Iowa = 91.13
6 Wisconsin = 90.15
7 Illinois = 89.98
11 Michigan = 89.08
15 Rutgers = 86.93
16 Michigan State = 86.91
23 Indiana = 86.20
32 Ohio State = 85.12
35 Purdue = 84.99
38 Penn State = 84.96
42 Maryland = 84.26
58 Minnesota = 81.80
69 Northwestern = 79.76
105 Nebraska = 76.52