Hi Renupriyanka,

NIT MCA Common Entrance Test (NIMCET)  is an entrance exam conducted for giving admission into MCA program. There is no restriction in the number of attempts for NIMCET exam, therefore you can give it any number of times and to answer your question specifically, YES you're eligible to give NIMCET in 2022 although you are a 2020 passed out student.

Hope this was helpful.