So assume a maximally participant member:
- starts 5 threads per day, so 25 experience points per day
- replies 5 times per day, so 10 pts/day
- replied to - 10 pts/day
- like - 5 pts/day
- liked - 5 pts/day
Total of 25+10+10+5+5 = 55 pts/day
So to get to VIP of 240000 points days = 4364 days = 12 years.
This 12 years will come down a little if you make some threads which become sticky, so it might be say 11 years.
@AnkerOfficial please clarify if I made an error or you made an error. It seems you added a 0 to the experience or I goofed on my math.