How many watts should the ideal amp for the vehicle be

How many watts should be the ideal amp for the vehicle and how many watts should the speakers be for the quality of the sound

standard 5 channel amp 2 mid set 1 bass ideal if you say you don't like such bass 4 channel amp 2 mid team if you like bass but if you say it doesn't take up space, you need to buy side standing small bass and again 2 mid set 5 channel amps mid brand recommendation can be infinity

There is no standard ideal for this work. It is a relative event. The best in terms of sound quality acoustics is that the sound comes from the front, press from the back, that is, 1 set of speakers in the front and 1 subwoofer in the back. sr4 or rockford p400.4 would be a fine system.