Question: Using Azure AD B2C, I want to change the signup link text that says "Sign up now" to say "Create an account". How do I do this?

Answer: 
Just in case any body need to change the text on singing signup page using custom policies, you also can use the Localization customization to add the text that you need for specific language.

Those are the instructions
<https://learn.microsoft.com/en-us/azure/active-directory-b2c/custom-policy-localization>
**Few Corrections on the answer shared by @Razi**

1. Download the Json file from **Unified Sign up or sign in page** instead of **Local Account Sign Up Page**.
2. Make Sure to Modify the Override value to **true** so that B2C will able to detect the change, if there is no true value in the Override you will see below error while uploading the file.

[![enter image description here](https://i.stack.imgur.com/PfNow.png)](https://i.stack.imgur.com/PfNow.png)

**Few Inputs from my side**

User flows supports 2 options now as per below Screenshot:

[![enter image description here](https://i.stack.imgur.com/kvbmF.png)](https://i.stack.imgur.com/kvbmF.png)

If you have selected **Recommended** Version use the below Json:

```
{
  "ElementType": "UxElement",
  "ElementId": null,
  "StringId": "createaccount_one_link",
  "Override": true,
  "Value": "Create an account"
}

```

For the **Standard** Version **@Razi** already answered above.