Need help with coding in script

[snippsat]

The input JSON as your complete posted is not valied
Tips use jsoncrack to check if valid and see structure.
state.json

Output:
{
  "states": [
    {
      "state": [
        {
          "id": [
            "0"
          ],
          "tempValue": [
            "2000"
          ],
          "dhw": [
            "1"
          ]
        },
        {
          "id": [
            "1"
          ],
          "tempValue": [
            "1900"
          ],
          "dhw": [
            "1"
          ]
        },
        {
          "id": [
            "2"
          ],
          "tempValue": [
            "1700"
          ],
          "dhw": [
            "1"
          ]
        },
        {
          "id": [
            "3"
          ],
          "tempValue": [
            "1800"
          ],
          "dhw": [
            "1"
          ]
        },
        {
          "id": [
            "4"
          ],
          "tempValue": [
            "1000"
          ],
          "dhw": [
            "1"
          ]
        }
      ]
    }
  ]
}

Code of your code and print it,insted of the log stuff.

import json

with open('state.json') as file:
    Response = json.load(file)
    if 'states' in Response:
        for state in Response["states"][0]["state"]:
            print("id ="+ state["id"][0] + " Temp =" + state["tempValue"][0])

Output:
id =0 Temp =2000
id =1 Temp =1900
id =2 Temp =1700
id =3 Temp =1800
id =4 Temp =1000

With f-string.

import json

with open('state.json') as file:
    Response = json.load(file)
    if 'states' in Response:
        for state in Response["states"][0]["state"]:
            print(f'id = {state["id"][0]} Temp = {state["tempValue"][0]}')

Output:
id = 0 Temp = 2000
id = 1 Temp = 1900
id = 2 Temp = 1700
id = 3 Temp = 1800
id = 4 Temp = 1000