I am looking for a search function that describes users' answers with their tags as the variable. For example, if I wanted to look up Scott's answers with the restriction that it is limited to soft-question, how could I do that?
This query which can be entered into the search box as
user:74240 [soft-question] is:answer
should give you what you are asking for. If you meant a different Scott, find their user-id and substitute that.
As Martin Sleziak mentions, you can go to the profile page for a particular user and click on a tag to list the questions and answers that user has written in that tag.