Please note to be able to add text on a map you have to have created a project within your map. Once created the draw option will become available to you.
Click on draw and select text.
Place your text point on the map and select finish.
Please note if you want to add multiple text points that have the same text keep adding points and then select finish.
The feature details menu will appear on screen, now click on the three vertical dots and select edit.
Input your text in the textarea and click on the tick.
Your text will now be added to the project.
To edit click on the three vertical dots on the feature details menu and the edit.
Make any changes and click on the tick.