Apurva Asrani leaked the script of Simran through his social media handle stating, "Here it is-the #Simran script! Interesting exercise to see how some bits evolve, while some get lost in translation." This comes post his drawn-out fight with Kangana over the writing credits for the film. You can read his script at the link below:
https://www.scribd.com/document/359308728/Simran-Movie-Script