https://www.forbes.com/sites/kristidosh/2019/12/28/college-football-playoff-payouts-for-2019-season/?sh=34f7cf563d5a

Key info is here (with italics my notes)

Group of 5: $90 million collective pool
The “Group of 5” (the American Athletic Conference, Conference USA, Mid-American Conference, Mountain West Conference and Sun Belt Conference) divide their collective pool pursuant to an agreement and formula devised by those conferences. Although that formula has not been formally disclosed to the public, reports have the majority shared equally, with a small portion set aside to be distributed based on performance.

If this $90M were split equally between all 66 teams, it would be $1.364M per team

Independents: 
Army, BYU and UMass share a collective pool of $1.56 million.

Split equally this would be $0.52M per school.  Even if Army and UMass only get 10% each, that puts BYU's payout less than the average G5.

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Ultimately none of this matters too much though since it's clear the Big 12 is a much much better deal than either of these options