Hello.
Unfortunately, there isn't any way to increase the size of the font or add more rows to the Favorites Bar. You could edit the names to be shorter, but with as many as you have, that wouldn't solve the issue.
There are several ways you can organize the Favorites Bar that may help. If you want to access them all from the Favorites Bar, you could organize them into folders that will drop-down when you click them. You can also use the Bookmarks menu in the menu bar, and organize them there or in folders, or view them in the Safari sidebar.
Here is a nice article that explains the options:
How to Organize Safari Bookmarks and Favorites
Hope that helps,
C