I've deleted some old forms, will that give me more space as I am near my quota of 500 entries

I have a free account with jotform but didnt know there is a limit of the number of entries. I've tried deleting some old forms but it doesnt seem to give me more space.

If you're referring to the Submission storage, the limit is 500. You don't have to delete the form to clear the submission storage. You just need to delete the submissions of the form. Here's a guide: https://www.jotform.com/help/377-How-to-Delete-Form-Submission-Data

Keep in mind that deleted submissions is not recoverable. Also, you need to purge the deleted forms in the trash folder.

Hope that helps. If you have questions or concerns, please contact us again.