The most common failure of the Clutch Switch is in the "bullet connectors on the forward left side of the frame. Sometimes a "wiggle test" will reveal an intermittent connection failure there: With the bike in neutral, ignition and run switch on, hold the clutch lever in and hold the starter button down while slowly rotating the bars lock-to-lock. If the starter catches, clean-crimp-treat-seal the bullet connectors . . .
Simplest way to test the relay is to insert a known good, 5-pin, high current relay in that position. This Picker Components relay has the highest 5th pin (NC) rating I've ever seen (25amps):
https://www.digikey.com/en/products/detail/picker-components/PC782-1C-12S-R-X/12352866