You can't change a custom URL after creation. However, you can remove the custom URL from your channel and claim a new one if you want to change it. Note: Once you remove a custom URL it may become free to be claimed by another creator.
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
You can't change a custom URL after creation. However, you can remove the custom URL from your channel and claim a new one if you want to change it. Note: Once you remove a custom URL it may become free to be claimed by another creator.