Where on my HHR can I enter the transmission fluid and how many bottle of trasnmission fluid would I need ? Last but not least when it takes a minute 30 seconds for my car to shift into gear what would be the number of things that would cause this .

 

Welcome to the site.

You can use the search function here and find many threads about servicing the HHR automatic transmission.
You didn't specify if you were dropping the pan or what, so trying to tell you how many quarts it would need, well..... who knows.
Do you have a leak and just need to replace some fluid?
If you don't find the answer using the search, then post back up here with some better details and info and I'm sure we can help out.

 

Welcome to the site, let us know what engine and year and transmission you have auto or manual? you post does not give us enough info. don't worry we have the information here

 

Welcome to the site.

I moved this thread to the maintenance and upkeep section.

 

to the forum!

90 seconds to engage a gear suggests more than low fluid, you might want to take your HHR to a reputable transmission shop for a diagnostic check.

Even if it were a low fluid level, loss of drive or failure to engage a gear suggests internal damage or component failure.