TDU2

would it possible to get max xp for the club?

I believe that it's server sided I have tried many times but failed

It is indeed server-sided, I've tried countless different saves and not a single success... lol

i thought it could be done. since i seen it done on the pc version.

Well, PCs have trainers which allow users to play the game modded IRT (In Real Time) much like a gameshark or gamegenie worked.
but with mod tool (save editors) they only work after saving.

thx for the info.