How can I send submissions so users can update them?

4-How can I send out these 49 saved forms to the people to update?

You will need to send the individual emails with the edit link for each submission, you could create the edit link like this: 

www.jotform.com/edit/SubmissionID 

You will find the submission ID on the submissions page for your form, it is the very first field showing there, in case you cannot find it, please make sure it's checked on the submissions settings: 

You will need to send the email with the edit link to each submitter, you could use the "Reply" function on the submissions page, but it's limited based on the plan you have: 

PAID accounts : limit is 1000/day

Free and Guest accounts  :  20 /day

Additionally, you could create a report and protect it with a password, share the link with all the users that submitted your form so they can search their submission and edit it. 

Here's a guide that will help you creating reports: https://www.jotform.com/help/326-How-To-Create-Form-Reports-in-JotForm 

Hope this helps.