Find below-mentioned points to Edit Category.
Step (1) − Navigate to Posts > Categories section from your wp-admin panel.
Step (2) − A new window opens and your created category will be visible there. Hover on the category and Click on Edit option.
Step (3) – You can edit the fields according to your need and then click on the Update button.
Step (4) – You can also edit few details without going inside of the Category. Just Hover on Category and Click on Quick Edit option.
Step (5) – In the new window, you can edit Name and Slug of the Category. Then Click on Update Category to save your changes.