值得 / 值

zhídé / zhí

Similarities

Both can say that something has value — that it is worth the time, effort or money.

这(Zhè)个(ge)调(diào)查(chá)对(duì)今(jīn)后(hòu)的(de)工(gōng)作(zuò)很(hěn)有(yǒu)用(yòng)，花(huā)再(zài)多(duō)时(shí)间(jiān)也(yě)值(zhí)得(dé)。

This survey is very useful for the work ahead. However much time it takes, it's worth it.

这(Zhè)个(ge)调(diào)查(chá)对(duì)今(jīn)后(hòu)的(de)工(gōng)作(zuò)很(hěn)有(yǒu)用(yòng)，花(huā)再(zài)多(duō)时(shí)间(jiān)也(yě)值(zhí)。

This survey is very useful for the work ahead. However much time it takes, it's worth it.

Either word works in this sentence.

值得 + Verb

别(Bié)生(shēng)气(qì)了(le)，咱(zán)们(men)不(bù)值(zhí)得(dé)为(wèi)这(zhè)么(me)点儿(diǎnr)小(xiǎo)事(shì)生(shēng)气(qì)。

Don't be cross. It isn't worth us getting angry over such a small thing.

为(Wèi)这(zhè)么(me)点儿(diǎnr)小(xiǎo)事(shì)生(shēng)气(qì)，一(yì)点儿(diǎnr)也(yě)不(bù)值(zhí)。

Getting angry over such a small thing isn't worth it at all.

值得 takes a verb or a short clause after it. 值 here is an adjective and usually stands alone.

这(Zhè)个(ge)沙(shā)发(fā)价(jià)钱(qián)不(bù)贵(guì)，质(zhì)量(liàng)又(yòu)好(hǎo)，值(zhí)得(dé)买(mǎi)。

This sofa isn't expensive and the quality is good — it's worth buying.

这(Zhè)个(ge)手(shǒu)机(jī)值(zhí)五(wǔ)千(qiān)块(kuài)。

This phone is worth five thousand yuan.

值得	值
A verb	An adjective or a verb
A verb follows	A price follows, or nothing at all
Rates the value of an action	Rates the price of a thing

Remember: 值得 + Verb = worth doing. 值 + Money = is worth that amount.