Hi Themba, welcome to the Community!
Is your Bitbucket account connected to Sourcetree? If it's not, you'll need to connect them before you can push your changes to the remote, you can do so by following the instructions at Connect your Bitbucket account. If they are already connected, then you can send your changes by clicking on 'Push' at the top of the screen:
Is this working for you? Let us know if you need any help!
Supported Platforms macOS Windows We recently introduced support for additional hosting services such as GitHub Enterprise, GitLab (Cloud, Community Edition, Enterprise Edition), and...
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