Hello Prince,

You can check the previous years 12th Maharashtra board papers by clicking the link below
https://www.google.com/amp/s/school.careers360.com/articles/maharashtra-hsc-question-papers/amp

Also there are samples for you to solve so that it will increase your confidence by solving them.Try to solve as many sample papers as you can.Before solving sample papers make sure that you have prepared well so that you won't loose confidence if you cannot solve the paper.Also subject wise  important topics are given which will help you while preparing for boards.
I hope this is helpful to you.