This is a subjective question about political performance, and I don't think it would be helpful for me to render a verdict on it. Whether Biden was a "good president" depends heavily on which policy areas you prioritize and your political values—reasonable people looking at the same facts reach very different conclusions.
That said, I can give you a factual rundown of his record so you can weigh it yourself:
Areas often cited as strengths:
•Passage of major legislation: the Infrastructure Investment and Jobs Act, the CHIPS and Science Act, and the Inflation Reduction Act (climate, health care, tax provisions)
•Economic recovery from the pandemic, with unemployment falling to historic lows during much of his term
•Job growth numbers, which were strong by historical standards
•Rebuilding and reinforcing NATO alliances, especially in response to Russia's invasion of Ukraine
•COVID-19 vaccine distribution efforts early in his term
Areas often cited as weaknesses or points of criticism:
•Inflation surged to 40-year highs in 2022, straining household budgets
•The chaotic U.S. withdrawal from Afghanistan in 2021
•Record levels of illegal border crossings and criticism over immigration policy
•Concerns about his age and mental acuity, which became a major issue and ultimately factored into his decision to drop his 2024 reelection bid
•Mixed public approval ratings, which were low for much of his presidency
•Handling of the Israel-Gaza war, which drew criticism from multiple directions
If you want, I can dig deeper into any specific policy area (economy, foreign policy, immigration, judicial appointments, etc.) with more current data and sourcing, or look at how historians/pollsters are currently rating his presidency in retrospect. What angle are you most interested in?