Level shifting to connect mkr wifi 1010 shield to a 5V board?

Greetings!

What is the best way to do the level shifting necessary to connect the mkr wifi 1010 shield (3.3V) with an Arduino board that runs 5V??? I have no idea where to start.

Thank you in advance for your ideas!

MKR1010 is not a shield. it is MKR Zero with esp-32 added for WiFi