Does time actually exist? Did mankind just make it up

Time is both a concept and a reality,there is a reason we call it the fourth dimension. We can't physically perceive time but we can see it's effects...people age and die because of the passage
of time. We don't really know if it existed before the Big Bang-I'm thinking,though,that it must have in some form because if time didn't exist,and everything was in stasis,then how could the Big Bang have even happened?

Yes,time exists.

The "Big Bang Theory" does not postulate that there was nothing before the big bang...it pre supposes that "something" exploded and that the results of that explosion (big bang) are what we see today. In order for something to explode, it had to have existed, therefore there was "something" even before the Big bang. If "something" exploded, then that explosion took time to happen.

The fact that you are not educated explains why your question makes no sense.

Time is NOT a force.

Rather, time is an ordering of events.

Example: Stars formed AFTER the Big Bang, you are born BEFORE you die, etc.

The Big Bang was not caused by "two bundle of anti-matter and matter" clashing into each other.

And you don't have a theory, you have an opinion, a wrong one at that, but this is a free country :-)

Read what the definition of "theory" in Physics is.

Big bang theory doesn't suggest there is nothing before the big bang, its just unknown.

Let's just stick with time exists and avoid the lengthy hand-wavy answer where its just primarily speculation based on theory.

It is measurable and relative enjoy.

Time can be described as something that doesn't let everything happen at once but besides that what time is or if it is just how our brains proceeds the world around us is a mystery.