Im looking the sheet music for the wedding hymn below i have been trying to get it for a few weeks now?

I can see your difficulty! The ONLY place I can find this published is in the "Church Hymnal" of the Church of Ireland (the Anglican church in Ireland), published in 1960 and now apparently out of print. Perhaps you can find a copy on ebay or in your local library. (You can find lots of copies of the OLD Church Hymnal, but this is not in there.)