From Google Play Console, this script will get the name list of the active device models and the number of installs for each in JSON format in clipboard

device-names-installs.js

/*
* Instructions:
* Go to "Google Play Console" > "Statistics" > click on the dropdown beside "Select" and choose "Device" ...
* Then click "Add Device" and you can read the list of active devices and the number of installs ...
* After that, run the script in the browser console and you'll see a table after a while and the JSON data will be copied.
*/

const spans = document.querySelectorAll('[aria-label*="device :"]')
const data = []
let skipFirstOne = true

for (const span of spans) {
  if (skipFirstOne) {
    skipFirstOne = false
    continue
  }
  
  const tr = span.closest('tr')
  const trText = tr.innerText.trim()
  const trTextArray = trText.split("\n")
  const name = trTextArray[0]
  const installs = parseInt(trTextArray[1])

  data.push({ name, installs })
}

console.table(data)
copy(data) // Browser console specific

Hints in Screenshot: