Help new in Smart Contract ERC20 bep20

Hi, I’m new to this beautiful community and also new to Smart Contract, a newbie. my question is if you can help me to have a Smart Contract ERC20 OR BEP20 for a token simple contract that can be verified and updated later as I learn more I was using the but when trying to check on I have errors. If it is not a problem, I would like to start a new basic ERC20 Token, simple but that can be verified and updated later. Thank you very much, sorry for my bad English.