Hi @AppsOdini,
Could you please share a screenshot of your PowerApps app's configuration?
Could you please share a bit more about the OnSelect property of the Button control within your first form?
Further, could you please show more details about your issue with the 4th Form within your PowerApps app?
Please check if you have provided proper data source for the DataSource property of the 4th form control and proper value within Item property.
If could you provide more details about your scenario, we would provide a proper workaround for you.
More details about the Edit form and Display form controls, please check the following article:
Edit form and Display form controls in PowerApps
More details about Data forms in PowerApps, please check the following article:
Understand data forms in PowerApps
Best regards,
Kris