I know viruses are not "living" per say; but with hiv specifically, what cause's them to attack white blood cells in a very calculated manner? does the t cell's release a marker that attacks the virus? also, does the sheer amount of virus beat the t?

Good questions, but the biology of HIV infection is far more complex than these questions imply -- and no way (that I know of) to answer in the word/character limits on this forum.

As Dr. H indicated, it is a complex issue. For information on this topic you wish to read the item at the link given below for a start: https://pubmed.ncbi.nlm.nih.gov/11495453/#:~:text=HIV%20is%20a%20very%20small,on%20the%20co%2Dreceptor%20specificity.