You can't directly change your username in your Dropbox account. However, you can change your display name, which is what others will see when you share files or collaborate. Here's how:
- Log in to your Dropbox account.
- Click on your profile picture in the top right corner.
- Select "Settings" from the dropdown menu.
- Go to the "Account" tab.
- Click on "Edit" next to your current display name.
- Enter your desired display name and click "Save".
Your new display name will be updated across all your Dropbox activities.
Remember that your Dropbox username is tied to your email address and can't be changed. If you want to change your username, you'll need to create a new Dropbox account with a different email address.