I accidentally put”Jr” on my return when it wasn’t on last years return and I’m afraid they will reject the return again. Also it’s not on my license, how do I fix it?

[xmasbaby0]

If you have not e-filed yet you can go back to MY INFO to make changes to the way you entered your name.  If you already e-filed then all you can do is wait to see if the return is accepted or rejected.   If it rejects then fix it and re-file.   Adding "jr." is unlikely to make any difference at all.  The IRS only uses the first few letters of your name---they use your SSN.