Can i use a $ value steam wallet to my account that has € money left?

[Aura Farming]

Can i use a dollar steamwallet card to my account with a euro value?

[Cathulhu]

Yes. The currency will be automatically converted using current exchange rates.

https://support.steampowered.com/kb_article.php?ref=1122-RTSC-0478#restrictions

[Aura Farming]

İlk olarak Cathulhu tarafından gönderildi:

Yes. The currency will be automatically converted using current exchange rates.

any country value will do right?

[HEART]

İlk olarak Yonko.SH tarafından gönderildi:

İlk olarak Cathulhu tarafından gönderildi:

Yes. The currency will be automatically converted using current exchange rates.

any country value will do right?

Yes, cards are universal, rubles, danar, pounds, francs, etc...doesn't matter. Next time read the link that is given to you.

Are there country restrictions on Steam Wallet codes?
Steam Wallet codes typically do not have any country restrictions and can be redeemed worldwide (Note, some cards issued in Southeast Asia may only be redeemable in this region).