Oh ok thanks for clarifying the are you are trying to do this in.
The Event List Widget is limited to 10 maximum items.
However, the new Event List Widget, which looks the same can accept more then 10.
I tried this and got 15 Events to display using this:
[tribe_events_list limit=”15″]
It is does not work to use -1 and display all the events.
You can read more about the options here:
https://theeventscalendar.com/knowledgebase/pro-widget-shortcodes/
Let me know if you can get that to work.
Thanks