Hi Annie!
Thanks for getting in touch! 🙂
Let me try and help you with that.
If you want to hide the currency symbol from the community add form, you could comment that code by doing a template override of the cost.php template located in wp-content/plugins/the-events-calendar-community-events/src/views/community/modules/cost.php
You should try commenting out the code from line 45 to 67.
There is a great article that explains how to do a template override so you don’t loose the changes after a plugin update > https://theeventscalendar.com/knowledgebase/themers-guide/
I hope that helps and let me know if you have any questions.
Best!
Victor