which books are more important for jee?

You must start with NCERT Textbooks as NCERTs are written in simple language and easily understandable by everyone. For having a clear concept on all topics, you should start with NCERTs. Once done with these, you can move on to some standard reference books. Like Concepts of Physics by HC Verma is one of the best books for solving complex problems and having in depth knowledge. Other books you can follow- Understanding physics by Freedman and Young, Problems in physics by SS Krotov and Problems in General Physics by I.E Irodov - these two books have qualitu problems as per the level of Jee Main.

For Inorganic Chemistry, Concise Inorganic Chemistry by J D Lee is one of the best books for having in depth knowledge. You can rely on Chemical Calculations by RC Mukherjee for solving complex problems. Orgamic Chemistry can be done from NCERTs. Or else, OP Tandon will be enough.

Objective Mathematics by RD sharma has basics of all topics so you can fully focus on this book. Solve problems from this. Write down all the formulae in a note book which you can access any time needed. Play with Graphs by Amit M Agarwal (Arihant Publications) for Solving Problems, Complete mathematics for JEE Main TMH and Integral Calculus by Amit M Agarwal.