The one in Brew Dog? Massive round of applause if so - good job either way though mate; have never got there on any MET I've played.
Top score on pinside is 14 Billion or something - I think to get the mega scores you have to do well in each crank it up mode, as i understand End of the line scoring is based on your performance there.
Most I've ever managed at home on my Premium is around 600M with 3 CII done - waiting for the day when I finally reach EOTL - think i'd still keep the game even then, as it's so good and would aim for doing well in each CII.