When the du sol 2019 registration will start and end date?? Some guys are telling it has started or some not?? Tell me true

Yes, DU SOL Admission is already started and you can take admission in your selected field through online mode. You don't need to visit DU to take admission in it.

You must submit your application form for your interested program without waiting for the last date of submission.

The last date of submission of Online Admission is varies for all courses so you must confirm your date before applying.

Source: DU SOL Admission 2019

Hello Aryan,
Yes the registration for Delhi university school of open learning has begin from 1 June 2019 (Saturday) and will continue till 31 July 2019(Wednesday)  without any late fee. With late fee of 200 rs the registration will again begin on 1 August 2019 and will close on 31 August 2019.
You can see these information on the official website of du sol. You can download the prospectus from the official website.
I hope this answer will help.
All the best for the future.