import { LightningElement, api, wire, track } from 'lwc';
import { getRecordCreateDefaults } from 'lightning/uiRecordApi';
import ACCOUNT_OBJECT from '@salesforce/schema/Account';

export default class DynamicForm extends LightningElement

    @api selectedRecordTypeId = null;

    @wire(getRecordCreateDefaults, { objectApiName: ACCOUNT_OBJECT, recordTypeId: '$selectedRecordTypeId' })
    accountCreateDefaults;

    connectedCallback() {
        const data = this.accountCreateDefaults.data;
        // process it
    }
}