You really have to wonder if it is cost effective to do so. The value of Bitcoin would drop to zero if this was possible, what do they have to gain?
Unless it was a government effectivily trying to destroy Bitcoin ofc.
The cost of running a quantum computer is really huge and even if any government organization try to destroy bitcoin, they need to increase their power thousand fold from the current situation, there are claims that the most powerful quantum computer can reach up to 72 qubits but if they want to crack ECDSA in the bitcoin protocol they need to scale their power to over ten thousand qubits which is impossible at the current stage and lets assume they could reach those power, they could crack a few wallets with known public key and it will take years to crack one, how long will it take to crack every key Unless it was a government effectivily trying to destroy Bitcoin ofc.
. So it is practically and mathematically impossible to hack bitcoin.