dear student

No branch is best or worst. Every branch which is being taught has its requirements in the industry. It depends upon your interests to join the specific branch. You can compare the subjects of both the branches and see for those subjects in which you have interests in.

CSE: Computer science engineers are involved in many aspects of computing, from the design of individual microprocessors, personal computers and supercomputers to circuit designing and writing software that powers them.

IT:  Information Technology deals with the use of electronic computers and computer software to store, protect process, transmit and securely retrieve data. IT professionals perform a variety of tasks that range from installing applications to designing complex computer networks and information databases.

The major  difference between both these field is that IT deals with the application of computing technology to real life processes, while, Computer Science deals with the science that facilitates these applications. To make it short and simple, Computer Science is the creation of software and hardware by using different programming skills. On the other hand, IT is just the selection of the proper software or hardware for the task.

hope this helps

All the best!!!