valer

1 : to be worth <valen una fortuna : they're worth a fortune> <no vale protestar : there's no point in protesting> <valer la pena : to be worth the trouble>
2 : to cost <¿cuánto vale? : how much does it cost?>
3 : to earn, to gain <le valió una reprimenda : it earned him a reprimand>
4 : to protect, to aid <¡válgame Dios! : God help me!>
5 : to be equal to

1 : to have value <sus consejos no valen para nada : his advice is worthless>
2 : to be valid, to count <¡eso no vale! : that doesn't count!>
3 hacerse valer : to assert oneself
4 más vale : it's better <más vale que te vayas : you'd better go>

1 valerse de : to take advantage of
2 valerse solo or valerse por si mismo : to look after oneself
3 Mexico : to be fair <no se vale : it's not fair>