Due to my history of bad math, I didn't pass geometry in one quarter and pass the other one with a D but failed the semester exam. So I decide to take geometry online so I don't get double math classes, but when I enter my junior year I didn't get double block even though I wasn't done with online geometry. As right now am thinking about should I keep going with geometry even though I hate it or should I focus my attention on algebra 2 a class that so far I have a straight forward understanding of it and take other online classes so I can get into a good college.

That... Is a confusing read. Either way go with what you feels at comfortable with and what will
Help you most in your chosen field.

If you like Algebra more and do better at it then Geometry, drop the geometry class and go with the Algebra class.

What so confusing about it?

You usually need the extra time on the one you're bad at. Algebra 2 is a good class, but continuing to try to master Geometry will help overall math competency.

If you do one online and the other in a class, can you do both together?

Yes I can but right now am behind a bit because of my slow pace in understanding math.

Keep working on Algebra...but I think a good college would want you to do well in both courses...so can you possibly retake Geometry...?

Your best bet may be to devote most of your time to Algebra 2, and look for a self-paced Geometry course online.

Depends on where you're headed in your (planned) degree.

Geometry is a must for any field where you are working with building/manipulating phisychal objects, or computer graphics. Of course, these also use higher-level forms of geometry outside of "calculate the are of a square" or "What's the total volume of this box?"

However, it's not required (though may come in handy and/or reccomended) if you'll be focusing on abstract things, such as Chemistry, business, economics, etc.

I would reccomend you focus more on the Geometry to get at least a passing grade if it's a beginner's course. Otherwise, talk with your school's councilor and see what options are available, or even if it's required.