Is need to follow some policies to increase Cash app limit?

No, not any hard and fast rule set here to increase Cash app limit, but you must have to verify your account. While you verify your identity, then you must enter DOB, your full username, last four digits of SSN. These details are sufficient to verify your identity most of the time, but, if they ask for more, then you must provide it

https://www.gonetech.net/increase-cash-app-limit/