
You can make use of category popular tag to display most used tag on your blog. This will give list of frequently used tag anywhere you place the shortcode or funtion in your theme.
For example [popular_category_tags count=10 type=”popular-tags” category_id=”1″].
You can also call this function from your theme file: cush_category_popular_tag() for basic output.
When using the shortcode type is required. category id, count is not required. if no category id suplied, the plugin will default to current post category available.
For example [popular_category_tags type=”popular-tags” ].
You can find category tags options under Settings page
Settings -> Category Tags
Credit : (https://wordpress.stackexchange.com/questions/261617/display-most-popular-tags-of-category)
Download & install the zip archive
The plugin package installer can be downloaded from the WP2E project tab called “code”.
1 – Select the version to download if this option is available otherwise the “latest” version of the main plugin will be used.
2 – After downloading the zip archive install the plugin package installer in you local environment and activate the script from the plugin list.
3 – Under the section “Plugins” of the admin dashboard you should see a new “Dependencies & Licenses” link. Follow the instructions from this panel to finalize the installation of the missing dependencies.
Tips: Use the WP2E panel to add/suggest new dependencies to the local installation. Press F5 in the list of dependencies if the changes are not displayed right away.