Welcome Kamran. I had a NX450h+ prior to my current RX.
Great car. Full charge from zero via the wallbox charger should take no more than 2.5 hours. From a standard 3 pin socket it will be around 8 hours. It's worth looking at a tariff that will allow off peak charging. I have Octopus Go which presently has a low rate of 8p kWh between 00.30 and 5.30am. Basically allows you to get a full charge for under £1.20. Best eclusive EV mileage I achieved with the NX was 51 miles. Average would be c40 miles.
Happy motoring!