So you have made this form here using user inputs.
https://somilvinod.wixsite.com/rise50/mentee-registration
Can we take it that on your live published site that your form submits the user inputs into your specific database fine and you are just trying to display it elsewhere?
So the database when created would have been set as form submission and the dataset connection on your page would be set to write only.
You can simply use the getCurrentItem function from Wix Dataset API to do this.
https://www.wix.com/corvid/reference/wix-dataset.Dataset.html#getCurrentItem
getCurrentItem() by itself will get all of that data as shown in the API examples, however if you are wanting just the one field, you can simply use your code as this - $w(“#dataset1”).getCurrentItem().fieldKey;
If you are wanting to show this info on a members page after they have logged in, then you can simply add the dataset element to your page and connect it to the same database, however the dataset would need to be set as read only.
Then you can simply link a text box to the appropriate field through the dataset connection or you use the getCurrentItem() code to do it.
If you simply use a text box linked to the dataset directly, then as the member is logged in it will only show their specific data and so it will only show their own name for example.
If you are taking the users data and wanting to use it in another form and then save it into another database for example, then you would need to again use getCurrentItem() to get the specific data and then you would have to use setFieldValue or setFieldValues to save that data into the database, either using the save() function or a submit button on your page.
https://www.wix.com/corvid/reference/wix-dataset.Dataset.html#setFieldValue
https://www.wix.com/corvid/reference/wix-dataset.Dataset.html#setFieldValues
https://www.wix.com/corvid/reference/wix-dataset.Dataset.html#save
You can see an example of this in this Vorbly example here.
https://www.vorbly.com/Vorbly-Code/WIX-CODE-AUTO-FILL-FORM-WITH-USER-INPUTS
Finally, have you used any code as you are posting this in the Wix Corvid Forum which deals with all code related issues.
If you have used code already, please add it in a code block.