The past tense of the verb beat is beat. For example, Yesterday, I beat my personal record in the race.
However, the past participle form of beat is beaten. For example, She has beaten all her competitors in the tournament.
It’s important to note that beat is an irregular verb, which means it does not follow the regular pattern of adding -ed to form the past tense. Instead, it retains its base form in the past tense and changes to beaten in the past participle form.