Probably didn't learn much today. Maybe verify some suspension settings, but the track keeps getting wet and isn't rubbering in. Tomorrow conditions will be different, no rain, cloudy and cool during practice, and more sunshine and warmer temperatures for qualifying. The track will come to you, chasing the track will be useless. On Sunday it's very likely to rain on and off, very changeable conditions, having a lot of soft tires in the conditions looks like it will pay off as the soft tires will have an easier time coming up to temp if it starts to dry.
Whoever called Verstappen's tire selection did right.