Your API token is available on the Leap Dashboard, in the left column. Simply click "COPY" and your API token will be copied to your clipboard. Use this token in your code to gain access to the QPU. You may also view your current token by clicking on the eye icon, shown below.
You should reset your API token if it is shared or compromised in any way. From the Leap Dashboard, click "RESET" and you will receive a new token. You can then copy it in the same way as described above.