Please help us help you and fill where relevant:
Your LimeSurvey version: Community Edition 6.4.2
Own server or LimeSurvey hosting: Own Server
Survey theme/template: Default
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Hello All,

I would like to know

1) Whether a survey can be created and targeted only to registered users?
2) Once a registered user logs in they can see their responses and can edit them multiple times?
3) I would like to version these edits. i.e if needed the user can go back to their earlier version of responses?
4) Which template I need to edit which shows the actual responses?
5) Can users login/register using an SSO?

If there are any custom plugins/modules available please point me in the right direction?
Or can the above be accomplished ONLY through custom programming? 

1) Whether a survey can be created and targeted only to registered users?

There is no login section for survey takers (What you call "users" - users in LImesurvey terminology would be survey administrators / creators).

2) Once a registered user logs in they can see their responses and can edit them multiple times?

Respondents can register, but there is no login for them and no page where they can see "their" surveys.

Thanks for the replies
Is there any plugin or module available that can do most of the items asked above?
Or if custom programming is required can someone point me in the right direction?

 3) I would like to version these edits. i.e if needed the user can go back to their earlier version of responses?

gitlab.com/SondagesPro/managament/responseListAndManage

5) Can users login/register using an SSO?

Inspiration : gitlab.com/SondagesPro/TokenManagement/W...verTokenAuthenticate gitlab.com/SondagesPro/TokenManagement/OrcidAuthenticate gitlab.com/SondagesPro/TokenManagement/LdapTokenAuthenticate

Thanks a lot
Will try those options