is there a turn in quest glitch?

like the merge shop glitch, can i ask? is there also a turn in glitch? that u have all the requirements then turn in, and get the item but the requirements didn't lose or gone?

No. But there is a loop hole in quests that require AC items as requirements. AE added a feature back in 2016 where you can re-buy AC tagged items that are sold, used in merges, and in quest turn ins (The latter may have been an oversight). You can buy-back items used in merges and quest turn ins by going to the account manager page. For example; the Tendurrr Pet (now known as Tendurrr The Assistant), in the Kiss the Void quest from Nulgath can be re-bought every time you turn the quest in. meaning you only need to farm for the pet once, leaving Fragments of chaos and Betrayal blades the only drops you're rally farming for.
Hope this helped.

There is, but it's only used for Malorie's quests in Collection to gain rep while not losing your Token A . The quest turn-in glitch is only ideal for Malorie's quests because you don't need to accept any item reward.

You can use the merge glitch on quests but you won't be able to accept the item rewards.
@Experiment20 is right in that you can only use that method on Malorie's quests to gain easy rank 10 rep.

are there any other glitches other than merge,hot/dot,and bank space glitch?