Explanation:

Box 1: or
Or: Takes two arguments and returns true if either argument is true.
Box 2: equals(item()?['credithold'],'true')
Equals: Returns true if two values are equal.
For example, if parameter1 is someValue, this expression returns true:
equals(parameters('parameter1'), 'someValue')
Reference:
https://docs.microsoft.com/en-us/power-automate/use-expressions-in-conditions