Do. The. Research. Here and other forums.
Opinions are going to vary and rationalization for early issues will be made. Truth is, we'd have to see the latest metrics on reliability. Some have taken pretty good lumps in the early year(s) on this new model. And as it goes with any auto manufacturer, the woes are fading as production continues. Here's what you need to know, though. In my experience of owning new cars (30+ years in that game), Volvo has been the most gracious and attentive to issues we did have. To the tune of several thousands in credit, products and services. Props to them.
The new XC90 platform was the most fun I've ever had in an SUV. And with Polestar tuning it in no way feels fat, like the 4,600 lbs it actually displaces. Truly puts the "Sport" in "SUV". Second, is safety factor. This thing is a very light tank and has proved it in a few unfortunate encounters documented on this forum. It's most likely the safest machine on the road, IMO.
Had my share of issues on our '16 and it just got to be too much. The one thing despised was the infotainment screen. Just a personal thing as I'm tactile and there's simply no logic in flipping through screens to do what a single touch should do. Tap, swipe, tap, tap again, then tap the right one due to a bump in the road - you get the picture. Yeah, I know about voice commands, steering wheel options, blah blah blah. It was still a no go for me. Hearing now the screen has been improved with large(er) icons and such, but still.
Happy hunting. If you do choose Volvo and it provides the reliability experienced by some/most, you will not be disappointed. It's simply a blast to drive.