Hi @Vaibhav Patki welcome to the Atlassian community forum.
I understand that you would like to download more than "1000" records in Jira Cloud.
Note: It's possible in server instance.
I believe my post would address your query. Please stay safe and stay healthy.
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events