I can't get yggdrasil after I reached lap 15 and I can only get 20 orbs after I reach lap 17 but it shows I can get 200 orbs if I reach lap17

Yggdarsil is only given at the end of the race, all other awards after each lap

@Tom-HU To get Yggdrasil you have to wait until the race is over.

@Bettina-Löffler but it shows that I can get yggdrasil dragon if I reach lap 15

@Tom-HU I am guessing you didn’t read the rules..Get your Lap rewards after completing them!
With the EXCEPTION of LAP 15 - Yggdrasil - NOW you won’t need to close and restart your game to receive them! You will get the rewards right after completing them!

The exception means you have to wait until the race is over.

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@LilCricketPa ok,thx