As ever with RL, nothing is easy to find out.
For last season, under a 14 team SL, 14 team Championship & 9 team Championship 1 then each SL club received just over £1m and each Championships club approx £100k from the SL TV (only SL, doesn't include internationals, Challenge Cup etc) deal (£90m over 5 years).
SL clubs share in any SLE profit from the SL playoff series. And all clubs get a share of RFL profit (60% to SL, 30% to Championships, 10% to community clubs).
I don't know how the other TV money was distributed, for internationals, Challenge Cup etc. Whether theres a specific distribution mechanism for it or if it's just through end of year RFL profits.
I have no idea how it works under the new system.