What exactly is a Repository And it’s purpose

[Mick Roffey]

Sorry I’m new and I’m just learning

[Ken Paetzold]

I will provide an answer in the context of Git: 

After you install Git, you can initialize it onto a project to create a new repository. A Git repository is the .git/ folder inside of a project. This repository tracks all changes made to files in your project, building a history over time.

Here's a tutorial video that covers what a Git repository is that may be helpful! 

[DPKJ]

@Mick Roffey  Welcome to the community!

Repository in simplest term is a place where resources/things are stored.

Now in terms of Atlassian Bitbucket, or GIT, it is a place where source code is stored.