Box 7 code 2 is for folks under 59 1/2 indicating that the withdrawal should not be subject to an under-age penalty. You don't have that issue so code 7 should be fine.
You should not enter a conversion as a contribution. It is something different.
You should double check and make sure the account title for the roth account indicates it is a roth. Sometimes firms get the instructions wrong.
If its a roth then you should just answer the TT questions and indicate it was a conversion. Note that you cannot covert an RMD but for 2020 there were not RMDs.
When you're done review the PDF's of your forms and look for the conversion amount on 1040 line 4b and on form 8606 line 18.
This describes how to get a PDF of your return:
https://ttlc.intuit.com/community/saving/help/how-do-i-save-my-turbotax-online-return-as-a-pdf/00/26...
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