Tutorial Video. Step by step below;

1

First Step

2

Second Step

Select your Server

3

Third Step

Make sure to Turn OFF the Server

4

Fourth Step

Under the General Section, Click the Files tab

5

Fifth Step

Click the Three Dots on the extreme right of your world file and click on Archive

6

Sixth Step

A new archive will be made. Click on the Three Dots on the extreme right of the archive and click Download

7

Seventh Step

You can Start the server afterward if you desire to do so. Under General tab, Click on Console and Start the server.

There you go! You just downloaded your server’s world into your local storage!
How to Upload your WorldHow to reset your world