@Harisorakzai
I reviewed your post and I understand that you want to know how much should you charge the battery for the first time.
Don’t worry, I assure you I will try my best to get this sorted.
You need to charge the battery until it is full. The orange light beside the charger port will turn white once the battery is fully charged and then you can disconnect the charge if you wish to use the computer on battery or continue using the computer with the AC adapter.
NOTE: The battery stops charging once it is fully charged. (once the light beside the charger turns white)
I hope that answers your question and you have a great day!
P.S: Welcome to the HP Support Community 😊
If you wish to show appreciation for my efforts, mark my post as Accept as Solution. Your feedback counts!
Cheers!
Stay Home – Stay Safe
The_Fossette
I am an HP Employee