JSFiddle - React, Tailwind, and code Playground

JavaScript

var obj = {
  "Open": [{
    "Sprint_2": null,
    "Sprint_3": null,
    "Sprint_4": null,
    "Sprint_5": 6,
    "Sprint_6": 38,
    "Sprint_7": 7
  }],
  "Design": [{
    "Sprint_2": null,
    "Sprint_3": null,
    "Sprint_4": null,
    "Sprint_5": null,
    "Sprint_6": 1,
    "Sprint_7": null
  }],
  "Requirement": [{
    "Sprint_2": null,
    "Sprint_3": null,
    "Sprint_4": null,
    "Sprint_5": 1,
    "Sprint_6": 1,
    "Sprint_7": null
  }],
  "Ready_for_Build": [{
    "Sprint_2": null,
    "Sprint_3": null,
    "Sprint_4": null,
    "Sprint_5": 4,
    "Sprint_6": 2,
    "Sprint_7": null
  }],
  "Build": [{
    "Sprint_2": null,
    "Sprint_3": null,
    "Sprint_4": null,
    "Sprint_5": 12,
    "Sprint_6": 1,
    "Sprint_7": null
  }],
  "Ready_for_Test": [{
    "Sprint_2": null,
    "Sprint_3": null,
    "Sprint_4": null,
    "Sprint_5": 4,
    "Sprint_6": 4,
    "Sprint_7": null
  }],
  "Test": [{
    "Sprint_2": null,
    "Sprint_3": null,
    "Sprint_4": null,
    "Sprint_5": 5,
    "Sprint_6": 6,
    "Sprint_7": null
  }],
  "Ready_for_Acceptance": [{
    "Sprint_2": null,
    "Sprint_3": null,
    "Sprint_4": null,
    "Sprint_5": 3,
    "Sprint_6": null,
    "Sprint_7": null
  }],
  "Accepted": [{
    "Sprint_2": 38,
    "Sprint_3": 43,
    "Sprint_4": 57,
    "Sprint_5": 19,
    "Sprint_6": null,
    "Sprint_7": null
  }],
  "Total_Bugs": [{
    "Sprint_2": 47,
    "Sprint_3": 39,
    "Sprint_4": 71,
    "Sprint_5": 39,
    "Sprint_6": null,
    "Sprint_7": null
  }],
  "Bugs_Success": [{
    "Sprint_2": 37,
    "Sprint_3": 25,
    "Sprint_4": 42,
    "Sprint_5": 11,
    "Sprint_6": null,
    "Sprint_7": null
  }],
  "Bugs_In_Progress": [{
    "Sprint_2": null,
    "Sprint_3": null,
    "Sprint_4": 7,
    "Sprint_5": 4,
    "Sprint_6": null,
    "Sprint_7": null
  }]
};

var sum = 0;
for (status in obj) {
  for (project in obj[status]) {
    for (sprint in obj[status][project]) {
      sum += obj[status][project][sprint];
    }
 ...