Hi @ariele_kylie ,
Assuming you have created your account on GIT versioning tool like GitHub/ BitBucket/ Gitlab.
Once you have your account on one of the tool then create repository over here. Assuming if you have account on BitBucket then in left hand side you can see plus sign for adding repository. Add repository there. Once you create repository there, you will see option for cloning it. You need to clone it on your local server so that you can push your code from your local system to repository. You can do this either from sourcetree or GitBash. And once you make clone on local server then you can push the code easily on GIT.
if issue solved,Click Kudos & Accept as Solution