Thanks for posting in the community! For a description of what is included in a free account, please take a look at our Account Types article. Note that the shape limit is 60 objects per document, and lines are also included in the shape count. This shape count is also not pooled across the three documents you can create, meaning that you aren't able to use 180 shapes in one document.
If you have additional questions about specific functionality available to you after reviewing that resource, feel free to let me know!