Welcome. The inventory shows available boosters in Candy Crush and how many you have of each. You have no coconut wheels. You have one color bomb as shown by the 1. You have to earn the boosters, then your inventory will go up.
Many players are reporting this feature missing. As Freddy said, it's a test feature and not everyone had it all the time. Do the troubleshooting suggested above to see if that helps but for now many players are missing it. I hope it comes back for you soon. Good luck crushing.