- As a new member, how long do I have to wait to gain the trust of the members of the forum ?
If you mean getting trust score under your username, there's no rank requirement for that. You just need to complete trades with trusted users and get positive feedback from them, which they aren't actually obligated to give even if the trade went silky smooth. Users could also give you positive feedback for other things, like being a helpful and useful forum member, exposing scams, etc.
Two things to note - do not under any circumstances try to buy trust score or try to make trades with the sole purpose of getting trust score. That's an immediate red flag of scamming behavior.
No I think he means "acceptance" or "confirmation" from the members that
he is doing things right and gets rewarded with merit by working hard.
as Lucius said Legendary rank is a mixture of activity
being on the forum regularly and consistentlyand merit
the points system to reward good constructive postingThe best example is the member @Ratimov who has created incredible threads and
collected currently 6837 merit but is still on Hero membership because his activity
is only 997 since June 13th 2019.
Best of luck to the OP with his goal.