Hi @Özge 1 If you have purchased the individual program, then you will have lifetime access to it.
If you have completed the quest through All Access Pass, then you will have access as long as your subscription is active. You can go back to any lesson in any order as the videos will stay unlocked for any completed quest. However, if your subscription expires for some reason, then you will need to resubscribe again.
I hope this clears your doubt. Thanks.