How many cream cheese do you use to make 7 onces?

You can't use cream cheese to *make* 7 ounces. Ounces are a measure of weight, and cream cheese is a product that already has a weight.

Perhaps you're asking: "How much cream cheese do I need to make a recipe that requires 7 ounces of cream cheese?"

If that's the case, the answer is simple: You need 7 ounces of cream cheese.

However, cream cheese comes in different package sizes (like 8 ounces, 3 ounces, etc.). To know how many packages you need, you would divide the total ounces needed (7) by the size of the package you have.