Ok i got the platinum chip but i gave it to mr.house and i need it to open the hatch in the weather tower what do i do and it says i need it to unlock the bunker

House should have automatically given the chip to you before you set out towards the objective. However, upon going to the Fort (where the bunker is located), Caesar takes the chip from you. You will have to speak to him and talk about what he wants you to do with the bunker and then he gives the chip back to you to open it.

Yea bit theres a problem caesar hates me and i went to the fort and murderd everyone including caesar :/ but i figured a way to complete the quest i just killed mr.house so thanks anyways for the good tip

Ceasar probably had the chip in his inventory.

Very intelligent choice, by the way.