Hi @Maninder, to get more than 250 products you need to use the pagination concept. In this case, you can't pass the page parameter because it'll return an error. Please follow this documentation to implement pagination.
Hi @Maninder, If you read the above documentation carefully, you'll get all your questions answered. For your convenience, I've attached the screenshot, have a look.
Be careful the page filter support will be removed 4/1/2020
Save the effort of doing it twice use cursor-based pagination
The page filter has been removed from all endpoints. Use cursor-based pagination instead.
here's a better link
You need to review the response headers. Did you read the link that that was already posted here? https://shopify.dev/tutorials/make-paginated-requests-to-rest-admin-api#make-a-paginated-request-and... If you read it and follow the instructions you can see how to advance through the cursor-based pages...