It is not possible to check your current number of Pokémon Candies or Dream Shards from your bag.
Please refer to the following steps to locate your items.
Dream Shards:
1. Press the ""Pokémon"" button on the screen with the Snorlax, located on the bottom-left.
2. Select ""Pokémon Box.""
3. Randomly select a Pokémon, and tap the ""Level Up"" button.
Pokémon Candies:
1. Tap the ""Pokémon"" button on the home screen (the screen with the Snorlax), located on the bottom-left.
2. Select ""Pokémon Box.""
3. Select the Pokémon of your choice, and tap the ""Level Up"" button.