You can join the Cricket Australia Family by creating a Cricket ID, which will give you access to https://live.cricket.com.au and Cricket Australia Live mobile app where you will have access to live scores.
Please refer to the following help article for details on how to create a Cricket IDhttps://support.cricket.com.au/hc/en-us/articles/360000548535-How-to-create-a-Cricket-ID
We will provide live radio commentary for users located in Australia and the matches will be broadcast-ed on either on Channel 9 or 9Gem depending on your state of residency and the day of the week. For more details please check your local TV guide.
If you are located overseas, you can definitely follow the live scores on our platforms, read the latest news and match reports on cricket.com.au or Cricket Australia Live mobile app. but, unfortunately you won't be able to listen to the radio commentary.
You can try to contact the ECB to request more info on how to access the live video streaming for Ashes in your country of residence as these games are played in the UK.