In GitHub, the "commit" action saves your changes to the local repository, while the "push" action sends those changes to a remote repository. "Commit and push" combines these two actions into one, allowing you to save your changes locally and then push them to a remote repository with a single command.
"Commit and sync" is a similar concept, but it also pulls down any changes from the remote repository that have been made since your last commit. This allows you to keep your local repository up to date with the latest changes from other contributors.
Finally, "commit and create pull request" combines the commit and push actions with the creation of a new pull request. This allows you to propose your changes for review by other contributors to the project, and start a discussion about the changes you've made.
In summary, the differences between these options are:
"Commit": saves your changes to the local repository
"Commit and push": saves your changes to the local repository and pushes them to the remote repository
"Commit and sync": saves your changes to the local repository, pulls down any new changes from the remote repository, and merges them with your local repository
"Commit and create pull request": saves your changes to the local repository, pushes them to the remote repository, and creates a new pull request for review.