Using OR logic in contexts for Tasker
Or probably you can use "Inverted" conditions to do an opposite task?, e.g.

If you want to run a task when WiFi is connected OR when the profile:A is inactive, you can instead setup contexts for "WiFi is disconnected" AND "Profile: A is active" both with "inverted" checkbox selected, and setup a task that does the opposite, if that is possible.

This basically works because of:

(A OR B) = NOT((NOT A) AND (NOT B))