Basically tire pressure of each tire has to be written on tires himself.
Tire pressure is depending on a load, it means heavier driver much pressure needed. Generally we can conclude following:

Bikes tires	Tyre pressure (PSI)
Narrow tires	80 – 130
Mountain bike tires	25 – 35
In between type of tires	40 – 70

E-Scooter tires depend on rider weight (Kg)	Tyre pressure (PSI)
50-70	35-50
70-90	40-55
90-100	45-60