If i have a 71.7% in English, and I get a 64% on an Unit test.

What grade will I have?

Depends on how much ur teacher is going to make worth like projects can make up 70% of ur grade and participation could make up 20% and this unit test could only be worth 10% but it's different with every teacher so there isn't really an answer

tbh you'll most likely have a 70-80 it wont be that high but you can always re-take the test bruv