Regex, between parentheses

Could someone suggest me a regex to find the values that are inside the parenthesis?
or suggest me how to make the pattern.
Thanks in advance.

To search:

  • Value inside config_category → periodic
  • Value inside start_date → 2022-02-10
  • Value inside end_date → 2022-02-21
  • Value inside interval → 5

config_category(periodic)_start_date(2022-02-10)_end_date(2022-02-21)_interval(5)