"but question is can some one get the recovery rebate for the year of 2019"

There is No Rebate for 2019. We all suffered through the declaration of the covid pandemic disaster in 2020. In fact, today is the 1-year anniversary date of that declaration.

Did you read what I provided? 2019 or 2018 taxes were used to determine paying out Advanced amounts.

The 2020 tax return is the Reality and the reconciliation. Only eligibility in 2020 matters.

Just fill in your clients' 2020 tax return properly; let the program do the work.