Hello sir,
You have not mentioned the course in your query and the category of the candidate. JEE Main is an entrance exam for admission to B.Tech, B.Arch and B.Planning. Assuming that the percentile score is secured in JEE Main Paper 2A the overall rank is expected to be in between 5-100. Assuming that he belongs to general category he has decent chances of getting seat in School of Planning and Architecture, Delhi in B.Arch considering the previous year cut off. The cut off rank in 2020 JoSAA round 6 for SPA, Delhi for general category was 230. But cut off rank changes every year depending on the total number of candidates appeared, difficulty level of exam and number of seats available etc.
To check the previous year cut off please use the link below
https://josaa.nic.in/Result/Result/currentorcr.aspx
To know the list of college in which your son might get seat you can use our Architecture college predictor tool
https://engineering.careers360.com/jee-main-architecture-college-predictor?icn=QnA&ici=qna_answer
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