Hello there mostly the potential of blockchain can be applied almost to any field of interest.

I will enumerate fields where you can see growth of application of blockchain.

1. E-commerce
2. Banking and peer to peer payment
3. Energy sector
4. Social domain and apps
5. Agricultural sector ( not sure about this but It has potential for great implememtation)
6. Robotics and AI solution
7. Security
8. Data encryption and software
9. Retail and malls
10. Business sector ( mostly in demand on the future)