Some good ideas in this article. You can easily expand this to a 7 day kit or longer. Please note my comments below.
https://thepreppingguide.com/72hr-food-supply/I will note the need to rotate these foods an a regular basis, particularly if your kit is kept in a place which can become too warm for parts of the day, such as your car or even just a closet shelf.
If you plan on this kit being for a longer period, different foods may be more useful.
The SHORT term kit (72 hours) can be mostly high calorie items intended to give you fuel to get to a more extensive cache of foods.
LONGER term kits (7 day or longer) should include foods with provide some bulk, vitamins, minerals and fiber, in addition to the calorie count. These may also be foods with shorter storage life, so rotation becomes more important.