Change 'upcoming events' text and text size

I have a client that would like to change the wording on The Events Calendar and he wants to change some text size.

Instead of saying ‘upcoming events’, he wants other wording. He would also like the text that says ‘View all events’ to be larger.

I’ve found some posts regarding changing the font/text size, but none that seem applicable to my situation.

I do not have access to uploading or accessing files other than what I can get to in the WordPress admin area.

Thanks for your help.

https://www.ads-software.com/plugins/the-events-calendar/