: By default, the Shear tool is grouped with the Scale Tool (S) . Click and hold the Scale Tool icon to reveal the hidden Shear tool.
If you see the Shear tool greyed out inside the menu (the three dots ... at the bottom of your toolbar), it actually means the tool is already active in your main toolbar. illustrator shear tool greyed out
1. The Most Common Fix: Checking the Toolbar Customization Menu : By default, the Shear tool is grouped