The phrase 'so much relevance' is correct and usable in written English.
You can use it when talking about something that is important or significant. For example, "The impact of the artist's work has so much relevance to our understanding of art history."
These books have so much relevance to the present world uncertainities and the American dimension.
Thomas Carter, who played James (Hollywood) Hayward and has become a prominent movie director, had little idea that the show had so much relevance in Turkey.
In our view, these themes, which hold so much relevance at the present historical moment, cannot adequately be encompassed within the standard teaching models that treat the economy as rapidly self-adjusting towards an efficient state of full-employment equilibrium.
While puritanical suspicion and personal interests led to a community being ripped apart, lessons were subsequently learnt about the dangers of religious extremism and lapses in justice that have so much relevance today.
I still occasionally come across a record from back then that instantly takes me back there, and has so much relevance to now.
"How interesting it is that a case my father argued decades ago has so much relevance today," said his daughter, Lori Stokes, an anchor for New York's ABC7 and the first black broadcaster to appear on MSNBC.
Like many such volumes the collection suffers from variation, not in quality so much as relevance.
Three decades later, Rucker's essay has as much relevance to contemporary literature as ever.
"But it has just as much relevance to what was happening with Guantánamo Bay and Abu Ghraib".
But the reigning shows may not be losing relevance so much as they are being stretched to the breaking point by their proliferation.
Shauno Butcher Never seen anything like it before – a daring approach, brilliantly realised and, given it was one of the oldest plays in the world, shocking to find so much of direct contemporary relevance.
