Solo Miner, Block 912632

Everyone thought I was crazy running my old rig 24×7 for the last 7 years trying to solve a block with an usb miner

but today I finally hit the jackpot and solved a block with CKPool, just with a small problem though, rewards are forwarded to the the address in the username when you join the pool, and for the live of me I can't find it in my current wallet, think it was from an old wallet I created 7 years ago for testing and loss the access to it

how long will it take me to brute force it? or any other suggestions on how to recover it?