I need to get an element from this website:

So, to mimic the response, you can send a GET request to the URL. Note, there's no need for BeautifulSoup:

import requests


headers = {
    'authority': 'channelstore.roku.com',
    'accept': 'text/html,application/xhtml xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9',
    'accept-language': 'en-US,en;q=0.9',
    'cache-control': 'max-age=0',
    'cookie': '_csrf=ZaFYG2W7HQA4xqKW3SUfuta0; ks.locale=j:{"language":"en","country":"GB"}; _usn=c2062c71-f89e-456f-9374-7c7767afc665; _uc=54c11aa8-597e-4155-bfa1-379add00fc85:a044adeb2f02798a3c8335d874d49562; _ga=GA1.3.760826055.1671811832; _gid=GA1.3.2471563.1671811832; _ga=GA1.1.760826055.1671811832; _cs_c=0; roku_test; AWSELB=0DC9CDB91658555B919B869A2ED9157DFA13B446022D0100EBAAD7261A39D5A536AC0223E5570FAECF0099832FA9F5DB8028018FCCD9D0A49D8F2BDA087916BC1E51F73D1E; AWSELBCORS=0DC9CDB91658555B919B869A2ED9157DFA13B446022D0100EBAAD7261A39D5A536AC0223E5570FAECF0099832FA9F5DB8028018FCCD9D0A49D8F2BDA087916BC1E51F73D1E; _gat_UA-678051-1=1; _ga_ZZXW5ZLMQ5=GS1.1.1671811832.1.1.1671812598.0.0.0; _cs_id=8a1f1aec-e083-a585-e054-158b6714ab4a.1671811832.1.1671812598.1671811832.1.1705975832137; _cs_s=10.5.0.1671814398585',
    'sec-ch-ua': '"Not?A_Brand";v="8", "Chromium";v="108", "Google Chrome";v="108"',
    'sec-ch-ua-mobile': '?0',
    'sec-ch-ua-platform': '"macOS"',
    'sec-fetch-dest': 'document',
    'sec-fetch-mode': 'navigate',
    'sec-fetch-site': 'none',
    'sec-fetch-user': '?1',
    'upgrade-insecure-requests': '1',
    'user-agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36',
}

params = {
    'country': 'GB',
    'language': 'en',
}

response = requests.get(
    'https://channelstore.roku.com/api/v6/channels/detailsunion/38e7b84fe064cf927ad471ed632cc3d8',
    params=params,
    headers=headers,
).json()

# Uncomment to print all the data
# from pprint import pprint
# pprint(response)

print(response.get("feedChannel").get("name"))
print("rating: ", response.get("feedChannel").get("starRatingCount"))

Prints:

The Silver Collection Comedies
rating:  3