Iirc Lowest points was Panama.
Lowest Goals conceded is a farce imo because Uruguay conceded 0 in the group's but 3 in the knockouts. Iran and Peru conceded 2 each in the group's but never made the knockouts much like other teams that conceded 1 in the group's but have then gone on to concede more in the knockouts. So I will leave @Readingfanman to clarify that one
Fastest Goal so far is Denmark's first minute goal last Sunday I believe.
Card details here (Argentina & Panama lead with 11 Yellows each, Croatia and France have 8 each, Belgium on 7 & England on 5): https://www.transfermarkt.co.uk/world-cup-2018/fairnesstabelle/pokalwettbewerb/WM18/saison_id/2017/plus/1