You cant claim yet?, its not done till tomorrow, unless you mean what you claimed for the last reset. I cant claim the lowest score, its what you have whenever they reset the sever function or whatever at 4am tuesday. Unless there is something i dont know, in which i'll wait for the time they reset, get to 50th place and claim it that instant
Monday = Guild reset/ Get guild rewards
Tuesday= Arena reset/ get arena rewards
Thursday= Lab reset/ get rewards
Whatever your percentage is at that 4 am (3am for mondays) that is the reward score you have, during that day the percentage resets and you work towards the next week's goal putting you at 0/not on the list.