Is it wrong to want money? What does Hinduism say about wealth?

not at all — artha is one of life's four legitimate goals, as long as it is earned and used by dharma.

Hindu thought names four puruṣārthas, aims of human life: dharma (right living), artha (wealth and security), kāma (enjoyment and love) and mokṣa (liberation). Artha is not a lower, shameful goal; a householder is expected to earn, support the family, give generously and help keep society running. Lakṣmī, the goddess of prosperity, is worshipped in almost every home.

The key is that dharma frames artha. Wealth gained by cheating, exploitation or harm is not true artha. The Īśa Upaniṣad offers a balanced attitude in its first verse: everything belongs to the Lord, so enjoy what is given to you with a spirit of letting go, and do not covet anyone's wealth.

In practice: earn honestly, avoid greed (which the Gītā calls one of the gates to suffering, 16.21), share a portion, and do not let money become your identity. Prosperity used well is a blessing.

Four puruṣārthas: dharma, artha, kāma, mokṣa · Source: Īśa Upaniṣad 1; Bhagavad Gītā 16.21

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