It is difficult to definitively say whether you will get admission into M.Sc. Chemistry at Hyderabad University or BHU with a score of 131 in the CUET PG Entrance Exam (belonging to the EWS category).

Each Central University determines its own cut-off marks for admission into various programs based on factors like:

• Total number of applicants
• Difficulty level of the exam
• Number of seats available in the program

Since this is the first year of CUET PG,  previous year's cut-off information specifically for CUET PG isn't available.Search online for news articles or forums discussing expected CUET PG cut-offs for various universities and categories. This might give you a general idea of the cut-off range for M.Sc. Chemistry programs.

While not a perfect comparison, you can look at the cut-off marks for M.Sc. Chemistry programs at Hyderabad University and BHU for previous entrance exams they conducted (like their own university entrance exams). This can give you a rough idea of the competitiveness of these programs.

https://university.careers360.com/download/ebooks/all-about-cuet

I hope it helps!