Shortcut keys for double click, left click, and right click without a mouse in Windows 10

 The o key Opens the selected shortcut when right clicking and the the p displays the Properties.

Have you selected the option to Underline the keyboard shortcuts and access keys?

1. Press the WinKey + X to display the system menu and select Control Panel.

2. Click the Ease of Access Center.

 select mouse turm on control you mouse with keyboard

3. Select the Make the Keyboard easier to use link.

4. In the Make it easier to use keyboard shortcuts section, place a check mark in the Underline Keyboard Shortcuts and Access Keys option.

 Shortcut keys for mouse in number lock 

left click is  press  / +5

right click is  press  -+5

double click is  press  +