1. Open File Explorer. You can do this either from the taskbar, from the Start menu, search for it in the search box, or press the Windows logo key + E.

2. Select This PC from the left pane. Then, on then click the word Computer near the top of the window, and select Map network drive. 

Screenshot of File Explorer

3. In the Drive list, select a drive letter. (Any available letter will do.)

4. In the Folder box, type the path of the folder or computer.  To connect every time you log on to your PC, select the Reconnect at sign-in check box.

5. Select Finish.

Some content copied from: https://support.microsoft.com/en-us/windows/map-a-network-drive-in-windows-10-29ce55d1-34e3-a7e2-4801-131475f9557d