Samuel 13:1 is translated differently or omitted in many translations as shown below:
1 Samuel 13:1
(AMP) SAUL WAS [forty] years old when he began to reign; and when he had reigned two years over Israel,
(ASV-1901) Saul was forty years old when he began to reign; and when he had reigned two years over Israel,
(CEB) Samuel rejects Saul’s dynasty Saul was 30 years old® when he became king, and he ruled over Israel forty-two years.®
(CSB) Sauls Failure Saul was thirty years old when he became king, and he reigned forty-two years over Israel.
(ESV2016) Saul lived for one year and then became king, and when he had reigned for two years over Israel,
(Geneva 1599) 3 The Philistines are smitten of Saul and Jonathan. 13 Saul being disobedient to God's commandment, is showed of Samuel that he shall not reign. 19 The great slavery, wherein the Philistines kept the Israelites. Saul now had been King one year, and he reigned two years over Israel.
(GNT) OMITTED TEXT
(KJV) Saul reigned one year; and when he had reigned two years over Israel,
(LEB) Saul was thirty years old at the beginning of his reign, and he reigned forty- two years over Israel.
(MEV) Saul Fails His Commission Saul was thirty years old when he began to reign, and he reigned forty-two years over Israel
(NABRE) III. Saul and David [Saul was…years old when he became king and he reigned…-two years over Israel.]
(NASB2020) Saul was thirty years old when he began to reign, and he reigned for forty-two years over Israel.
(NIV2011) Saul was thirty years old when he became king, and he reigned over Israel forty- two years.
(NKJV82) Saul reigned one year; and when he had reigned two years over Israel,
(NLT2013) Continued War with PhilistiaSaul was thirty years old when he became king, and he reigned for forty-two years.
(REB) Campaign against The Philistines. Saul was thirty years old when he became king, and he reigned over Israel for twenty-two years.
(RSVA) Saul was . . . years old when he began to reign; and he reigned . . . and two years over Israel.
(TS2009) Sha’ul was ... years old when he began to reign. And when he had reigned two years over Yisra’ěl,
(UASV+) Saul was [�]N1 years old when he began to reign, and for [�]N2 he reigned over Israel.
(WEB 2014A) Saul was thirty years old when he became king, and he reigned over Israel forty-two years.
The verse is some times referred to as being defective hence it being omitted in the GNT and BBE translations