Hey @JIMMY,
Thanks for reaching out!
Tax rates are something you can likely configure with your eCommerce plugin, however getting things to display on the front-end of your site is a bit more complicated. You’d have to customize your The Events Calendar ticketing add-on with the methods described in this Themer’s Guide here → https://theeventscalendar.com/knowledgebase/themers-guide/
We unfortunately cannot help with custom coding but that themer’s guide is very comprehensive and should help quite a bit.
The tickets form specifically can be customized in the following file in your WooCommerce Tickets plugin files: src/views/wootickets/tickets.php
I hope this all helps!
Best of luck with your customizations,
George