No , those candidates who were marked absent in NEET 2020 there will be no Ranks referring to them. Because they did not appeared in the exam there will be no marks for them therefore there will be no criteria to include them in Final Merit List.

For what marks leads to what rank is given here : https://medicine.careers360.com/articles/neet-result-marks-vs-rank

And to know expected cut off of NEET 2020 read this article : https://medicine.careers360.com/articles/neet-cut-off

And if any doubt leave there your query, soon it will be resolved.