What is data value mean?

Answer 1

Something that is inputted, manipulated or the output of a program
E.g
-- Number
-- string
-- boolean
-- objects, etc

Answer 2

it depends on the value you assign to it!
eg (python):

import requests
data=requests.get('https://reqbin.com/echo/get/json').content
print(data)

Here, Data Has The Value Of The Data Received From The Server.
Data is nothing but just a variable that you can assign as per your requirement.