The only way to see any Stat info is by looking at your save file in the Save Data menu. When you highlight it it will give you a very small section of stats that are very general. One of the things it shows you is the number of shards you have collected.
Still i think its a bit stupid that there is no stats screen as this would be handy
It's a pain to keep having to check the save file to see a very limited selection of stats. It'd be great if there was a stats screen.
Also would be nice if there was a list of the stunts instead of it showing you one at a time. Some of the harder ones would be handy to know early in the game when they're more than possible but it doesn't show you until you've done all the easier ones and blasted through most of the game to a point where they're excruciatingly difficult.