Testnet Faucet Guide
Keys can be created in a variety of ways and through many different websites.
We would never recommend using an external website for a Main Network keypair
Anyway, here's a few websites you can do it on, or you can use cleos
Next go to the https://faucet.testnet.app.ultra.io/ and paste public key into the form as shown below

Click on Create Account

Make sure the account was created
sh
cleos -u https://ultratest-api.eoseoul.io get account 1aa2aa3aa4aeClaiming tokens
Once you created an account click on the Token Faucet tab and insert your account name in the form.

Click on issue and you should get 10 UOS

If you need more tokens wait for 2 minutes and claim again.