How did they get your wallet or seed phrase?
If somebody around you has it, then just use a different wallet in the future. Now if the hackers got it through malware or whatever it is, I guess it's time for you to format your computer or laptop because chances are, you might get hacked again in the future since they already have access to your device.

Worst case scenario? None as long as the hackers aren't the ones that got your seed phrase because you can just change a new wallet if somebody around you has the seed phrase. Just abandon it, and create another one then don't share it with others.