You can choose for Google Form Responses to be stored in the Google Sheet of your choosing. In that sheet, you'll find form respones in Form Responses 1 at the bottom of your connected spreadsheet.

If You Don't See Form Data

1. Look at the bottom of your sheet for multiple Form Responses sheets (e.g., Form Responses 1, Form Responses 2), and check all for your form responses
2. Open the form, and then follow the instructions for choosing where to save form responses, selecting the spreadsheet where you'd like to see the responses as the destination, or unlink the form from the spreadsheet to keep the responses in the form, only.