I want to know that if a team is in a waitlist is more than the open spots how do they choose team to qualify to worlds
This is not correct in any way. Please do not post information unless you are sure it is accurate.
For regular season events this is what the event partner guidelines says:
Inviting teams from the Waitlist is up to the discretion of the EP if no other policies are violated. If you are unsure about which teams to invite from the Waitlist, you can contact your RSM. When determining who to add from the Waitlist, teams must be sorted and given priority by 1) number of events they have registered for (least to greatest) then 2) the date the team was added to the Waitlist.
RECF members have gone on record to say that the waitlist for worlds (other than VexU) is randomised.
How about Vex IQ if am in the 139 spot on the waitlist is it random or how the choose