Bitcoin
Exchange Rates – How can I check the value stored in my paper wallet?
Shouldn’t balance be more than that?
At today’s exchange rate (₿1:€47117), your ₿0.03614145 would be worth €1702, not €163.
When scanning a QR (private key)
The results will depend on what exactly you mean.
Importing an address (not a private key) into a non-custodial wallet and rescanning the blockchain is a way to check the balance. You only need to get your private keys if you want to spend money or if the wallet is intended to be a cold wallet.
If you leave your private keys on a randomly selected, untrusted website, they could be stolen.