I need to send Text or integer from ESP 32 module to MIT app

Hello Friends
Iam new to programming and need a help
I want to send the text data say e.g. "Hello" or say integer e.g. 15 from ESP 32 to MIT app to change the test in the label once the Bluetooth is connected ,
Can u please help me with the arduino code and the MIT inventor Block chain ?
Thanks
Damodar