How can i get perrmission in likedin API?

i have some questions about API likedin i Want to to acces this three API: https://api.linkedin.com/v2/invitations

https://api.linkedin.com/v2/messages

https://api.linkedin.com/v2/people/(id:r_QK6m3pVf)?projection=(localizedFirstName,vanityName,localizedHeadline,headline) but get the full profile and not the basic.

1.-Is there a cost to be a LinkedIn partner?

2.-How can I become a member or obtain the permits that I am missing? like

  • List item
  • r_member_social
  • w_compliance
  • r_compliance
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