Hi, Hope someone can help here!

I am looking to be going to the USA in 2022 with some friends, however I have a conviction as a young teenager for causing a bomb hoax. Yes I know what a stupid thing to have done and I have lived ever since regretting my actions as a 13 year old. The conviction is over 10 years old now and i have not had any dealings with the police since. The conviction was considered 'spent' early as I had done everything that was asked of me and I was told that after a number of years the conviction would be 'sealed' which meant it would be taken off any records. I have had an enhanced DBS check in the past 3 years which came back clear but i have also submitted an information request to retrieve any information held on the PNC. 

Was just wondering what the likely hood of being caught if I answer no to the questions on the waiver and would the conviction even show up ? 

Thanks !