Your monitor is not listed on the official Dell support page for this soundbar:
https://www.dell.com/support...
And when I look at the pictures of the monitor, the indentations where you can magnetically dock this soundbar are missing. So from my point of view, I would say it doesn't fit.

I'm using this soundbar with my 32" monitor and I'm satisfied. It sounds ok and is good enough for the occasional video on the internet. The sound is what you would expect for a device of this size.

This is nothing for your big screen. The part is very small and sounds like a small bird with a stomach ache. Greetings timo