Bitcoin will remain in its position (still exist) and will not disappear even if the internet is turned off for a week or more, the reason is because Bitcoin is a digital asset stored in a blockchain (a decentralized data structure that does not depend on an internet connection). What is certain to happen if the internet goes down is that Bitcoin transactions cannot be carried out and the Bitcoin network cannot function. Bitcoin nodes that require an internet connection to validate transactions will also stop operating while they are without internet access, but will resume operation once the internet is back online.

It is natural for you to speculate like this because nothing is impossible in this world, but if you look at it from a broader perspective on technological developments, then what you fear will not happen at least in the near future because the satellite internet network covers the entire region.