Step 1: Navigate to  Services > Add New in your WordPress admin sidebar.

Step 2: If you want to edit single services using Elementor then go to Elementor > General and select Post Types Services

Step 3: Create a title, and insert your post content in the editing field.

Step 4: Once you are finished, click Publish to save the post.

Here is the screenshot that shows the various areas of the service post page: