Hello Aspirant

No you don't have to carry pen/pencil or any pad for calculation at JEE-Main examination center because there you will be provided with pen/pencil and rough sheets for calculation and before leaving the examination hall you will have to return those sheets to the invigilator present there.

As per the guidelines for examination day of JEE:-

>>>> You should carry your Admit card along with one government ID proof.

>>>> Masks are compulsory in the wake of pandemic.

>>>> There you will have to maintain the distance of at least 6 feet.

>>>> When you will enter in the examination hall you will have to give your left hand thumb impression on attendance sheet.

For more detailed guidelines kindly check out the link given below :-

https://engineering.careers360.com/articles/jee-main-exam-day-guidelines

I hope you got it.

Good Luck!!!