Here's the link to apply for OJEE 2020 https://ojee.nic.in/publicinfo/public/home.aspx
Please note that Spl OJEE B.tech application date has been extended till June 30 , 2020 due to the pandemic.
The OJEE 2020 exam is likely to be held in the month of August 2020 in the first wee.
For more details please visit this link https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.careers360.com/exams/ojee&ved=2ahUKEwjzysLF16PqAhUHwzgGHZ9dA48QFjABegQIBBAB&usg=AOvVaw0K6HSW9ZfrfKcv9v0X6ib1
Hope it helps