Retirement tax questions

I sold the “ earned “ company stock and received a 1099R and 1099B for the same transaction. They were done in the period that the CARES ACT allotted for special circumstances. My 1099B doesn’t have a date acquired. And Box 6 on the 1099R is empty. I earned it over a period of 4.5 years and it is extremely similar in situation to the questing being asked that started this thread. I do not want to be taxed twice. A live consultant told me I have a chance I’d being taxed twice with the information I had readily available to him. I have ALOT of info I can provide but I do now want to write a novel :). Can anyone help me out?