by qualifying in mains can i get admission in universities like srm,vit,lpu. my jee score is 74.i’m OBC

Yes Dear why not, but make sure that your score falls under the finalized merit list, so far as category is concerned, that will be considered laer on as first of all a general merit list is prepared then as per counselling rounds and demand for the seats category wise lists are prepared. Parallely you may visit the official websites of some other renowned institutions as well so that you remain updated about the features at other institutions too, in case you want to make choice for any of those, you may do it, you can consider – RNB Global University, Bikaner,.........J B Institute of Technology, Dehradun,.........Lovely Professional University, Phagwara,..........BITS, Mesra,.............JJTU, Jhunjhunu etc.