.env

INFURA_URL_TESTNET=<your_url_and_key>

findUniswapPool.js

const { ethers } = require('ethers')
const { abi: UniswapV3Factory } = require('@uniswap/v3-core/artifacts/contracts/UniswapV3Factory.sol/UniswapV3Factory.json')
require('dotenv').config()
const INFURA_URL_TESTNET = process.env.INFURA_URL_TESTNET

const address0 = '0x1f9840a85d5af5bf1d1762f925bdaddc4201f984'
const address1 = '0xc778417e063141139fce010982780140aa0cd5ab'
const factoryAddress = '0x1F98431c8aD98523631AE4a59f267346ea31F984'

async function main() {
  const provider = new ethers.providers.JsonRpcProvider(INFURA_URL_TESTNET)

  const factoryContract = new ethers.Contract(
    factoryAddress,
    UniswapV3Factory,
    provider
  )

  const poolAddress = await factoryContract.getPool(address0, address1, 500)
  console.log('poolAddress', poolAddress)

}

main()

package.json

{
  "name": "findpooluniswap",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "@uniswap/sdk-core": "^3.0.1",
    "dotenv": "^16.0.0",
    "ethers": "^5.6.4"
  }
}