This steam api returns a huge json like this
https://api.steampowered.com/ISteamApps/GetAppList/v0002/
{"applist":{"apps":[{"appid":216938,"name":"Pieterw test app76 ( 216938 )"},{"appid":660010,"name":"test2"},...]}}This can be used to find appid of a game by name.
There is another api that returns rating for a game e.g. for appid 10 for example
https://store.steampowered.com/appreviews/10?json=1&language=all&num_per_page=1
{"success":1,"query_summary":{"num_reviews":1,"review_score":9,"review_score_desc":"Overwhelmingly Positive","total_positive":148444,"total_negative":4636,"total_reviews":153080},"reviews":[{"recommendationid":"175274351","author":{"steamid":"76561198000188183","num_games_owned":0,"num_reviews":101,"playtime_forever":29,"playtime_last_two_weeks":0,"playtime_at_review":29,"last_played":1713727817},"language":"brazilian","review":"é o CS 1.6 roda de boas nas batatas, ainda tem MUITOS JOGADORES! da para jogar com os BOTS em promoção fica por R$ 3,29 só vai! promoção ano novo, carnaval, pascoa, férias de julho, dia das bruxas, dia das crianças e nata!","timestamp_created":1726706369,"timestamp_updated":1726706369,"voted_up":true,"votes_up":17,"votes_funny":0,"weighted_vote_score":"0.705882370471954346","comment_count":0,"steam_purchase":true,"received_for_free":false,"written_during_early_access":false,"hidden_in_steam_china":true,"steam_china_location":"","primarily_steam_deck":false}],"cursor":"AoMFQFV4eKAAAAAFP+aWleAAAAB/ls+cBQ=="}