Through its parish system and territorial ministry the Church of Scotland seeks to serve all the people of Scotland and not just the membership of the Church. Nobody in the situation of bereavement should hesitate to seek the services of the parish minister, either directly or through the undertaker.
You can download a helpful leaflet here which is designed to explain some of the practical things you need to know. It is not written specifically for the bereaved, but it may help in those circumstances. It is written for anyone who wants to know what to do, what to expect, and where to turn assistance.