Help please!!!

I know it's pretty stupid but I have filled CAT & NMAT forms, have just done a little ratios, percentages and averages so far! Haven't touched LRDI & VARC Please help me out, I really want to score a decent percentile, given my preparation but I need some guidance. Idk if my brain has become poor or maybe it's brainfog, Can anyone guide me on how to start now please?