I didn't get reward (1200 crafting material) of Battlepass (I did 110 lv!)

You get the metals incrementally, that is to say, a little bit at a time. As you level up to level 110, you'll get all 1200 crafting metals. Even though the pass info says you get 1200 metals after you hit level 110, it really means as you work your way up to 110, you'll get a few crafting metals from select levels. 

Also, if you didn't buy the pass for 10 dollars or with 950 Apex coins, you won't get the crafting metals. You get 1200 crafting metals if and only if you bought it.