So im taking 6 ap classes and a 4th year of language to get a seal of biliteracy.
I am wondering would taking no first period be harmful to my college admission application? I have increased my ap classes from 4 to 6 so will that make up for it?
Also would it be smart to take ap calculus ab and bc at the same time? Or do you think that would be too challenging. I have an A in pre calculus but i heard bc is just like ab except its like 2 levels of calculus in a year?
Thank you
No, it will not be harmful, and taking 4 AP 's, even more so 5 is sufficient. Remember that next year you’ll have the extra hidden class called " college applications. " 
If you’re in pre-calculus and your school offers AB then BC, you can only take AB - and it’s fine, no difference for admissions since you had calculus. If your school offers students in pre-calculus a choice of AB or BC (IE., they teach bc as ab first semester and bc second semester) then pick what you feel best about.
What would your schedule look like?